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when temperature goes up reaction rate goes up/concentration goes up reaction rate goes up/pressure goes up reaction rate goes up

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a chemical change happens when 2 or more substances are mixed - alexis

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Temperature

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A chemical change is a substance when 2 or more are mixed to make a product. Increasing the pressure molecules has less in which they can move . When  decreasing pressure, molecules don't hit each other as often and the rate of reaction decrease. J.m

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Brooks McDuffie // A chemical reaction has occurred when the starting substance(s) has changed into a new substance(s) over the course of the reaction. The rate at which chemical reaction occur can be affected by five major factors. These factors are temperature, concentration, pressure, surface area, or the use of catalysts or inhibitors.

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physical change is a substance that do not change. chemical change if the reaction(smell,color,....). RC

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a chemical reaction causes the atoms in an object to change. The rates can be controlled by temperature. one example is breaking of bonds. Jayden cornish

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a chemical reaction causes the atoms to change while physical causes how the object looks Jayden Cornish

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chemical reaction when you texture or color

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the right amount of stuff to make a chemical reaction or to make a different mixture.

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1. The difference between chemical & physical is that chemical happens on its own, and physical is when you add something to the mixture. 2. A chemical reaction is when two or more chemicals are mixes and reacts too it. 3.The rates of chemical reaction can be controlled by using safer things.

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Brooks McDuffie // A chemical change is when the starting substance(s) is a completely different substance than the product. However, a physical change is when the starting substance(s) change, but still keep the same chemical makeup

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A chemical and physical reaction can be difference by matter or substance. Physical in a substance doesn't change. Otherwise in a chemical change where there is chemical  reaction, a new substance is formed. When butter melts on a warm toast would be known as a physical change because its still butter just in a different form. If you have 2 compounds mix into a product you will experience change of color, smell, and bubbles.(J.M period 6)

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chemical change substances are mixed together to make a product. physical change substance doesnt change. you can tell when physical change ocuur if the state or shape change. you can tell when chemical change occur if you see gas bubbles or change of color

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The difference between a chemical and physical reaction is that a chemical reaction has two reactants mixed and changed into a product. In a physical reaction there is only one reactant that does not change into another product. A physical reaction is just like a cube of ice melting in a cup, there is only one reactant and that is the ice cube, when the ice cube melted it did not create a product therefore, it kept it's original formula H2O. You can tell a chemical reaction has happened when it bubbles or creates an odor.     S.C

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Chemical reactions create new chemicals that change while physical reactions just create chemicals that stay the same.

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A chemical reaction are substances called reactants that mix together to make a product that is completely different from it's original substance. Rates of chemical reactions can be controlled by catalyst and inhibitor. Catalyst can make the reaction rate go up or increase but the inhibitor will make the reaction rate go down or decrease. Some examples of Catalyst are the temperatures rising to make things become hotter or melt. Also, pressure that can make corn pop into pop corn. -Alexia Bair

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in a chemical change, you can tell because it will start to bubble and changes color. in a physical change, it changes shape and size - alexis

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D.W

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speed and pressure affect chemical reaction -Isaiah

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Reaction rates can either be slowed down or sped up. When you increase the temperature, pressure surface area, concretion, and catalysis all make the reaction rate go faster. and if you increase the inhibitor the reaction goes down.KG

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Increase In Pressure And Increase In Speed Of Reaction

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EW

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MN - A chemical reaction occurs when atoms, molecules, or ions interact.

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tempature pressure and concentration help affect a chemical reaction

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when pressure , tempature
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Chemical reactions occur when atoms, molecules or ions interact. If u try to control the reaction get it to take linger give it more space if u want it to take more then give it less space I.C.

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Chemical reactions changes the temperature, and pressure and and a new substance is changed.

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iron is more reactive than copper

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A chemical reaction  are changes that occur when atoms,iron,or molecules interact.The rates of chemical reactions can be controlled by temperature, concentration, pressure, surface area, catalyst and  a inhibitor

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reeeeeeeeeeeeeee

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Chemical reactions are reactions that create a new substance or substances.Chemical reactions can me controlled by temperature,concentration,pressure,surface area,and use of catalysts or inhibitors.

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evolution of pretipate

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In chemical change a new substance is formed.D.W

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evoultion of gas

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A Chemical Reaction Is When The Chemicals Change Their Shape And Temperature And Can Be Controlled From Collision With A Certain Atom Which Changes The Temperature And Rate Of Change Higher- Ricky

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A chemical reaction is changes that occur when atoms, ions, or molecules interact

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fffffffffffffffffffffffff

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change in state of matter

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chemical reaction is when atoms are rearranged to form a new substance but don't change state.when you increase the pressure the molecules have less space to move  around and hit each other, when the pressure decrease they can move freely and not hit each other as much. MY

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physical- it changes shape it changes substances   Chemical- new substance formed color or smell change i.c.

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A chemical reaction is a process that involves rearrangement in molecules or atoms that could give a change in its appearance. How to control rates of a chemical reaction- When you increase the pressure the molecules have less space to move this is an issue because that greater density of molecules  increase the number of collisions. When you decrease the pressure the molecules have more space to move around which doesnt cause as many collisions. So, to control the rate of chemical reactions make sure the pressure is lower so there wont be a change or at least very little change. EK

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change in color

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New substances formed ew

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new substances is formed

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A chemical reaction causes atoms of the same or different elements to rearrange to form a new substance. The main factors of chemical reactions are, temperature, concentration, pressure, surface area. But mainly catalyst which increases reaction rate and inhibitor which decreases reaction rate. // MG

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chemical change is the change of smell or color and it creates a new substance or substances and physical change is the same substance but new look/shape R.F

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rusting of iron.

combustion (burning) of wood.

metabolism of food in the body.

mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)

cooking an egg.

digesting sugar with the amylase in saliva.  Zaniya

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When you increase the pressure, the molecules have less space in which they can move. That greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases. Pressure is also related toconcentration and volume. Zaniya

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A chemical reaction is the changes of two substances reacting. To determine the rates of chemical reaction are controlled by either temperature ( as it goes up so will the rate) , concentration, pressure, surface area, and use of catalysts or inhibitors.-G.S

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The difference between a chemical and physical reaction is that in a physical reaction the substance is changed and in a chemical reaction the substance is changed -sc

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a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.  zaniya

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1. Color Changes. A change in color often indicates a chemical change. ...

2. Temperature Changes. ...

3. Precipitates. ...

4. Light Emission. ...

5. Gas Production.  zaniya

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a chemical reaction is controlled mechanically. we control it with temperature, pressure, surface area ext.                KM   5th P.D

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1. Change in Temperature. A change in temperature is characteristic of a chemical change. ...

2. Change in Color. A change in color is also another characteristic of a chemical reaction taking place. ...

3. Noticeable Odor. ...

4. Formation of a Precipitate. ...

5. Formation of Bubbles. Zaniya

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a physical change is a substance that does not change. A chemical change is when a chemical reaction takes place or in other words, when a new substance is formed.   K.M  5th period

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it can be changed into differnt form

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The difference between a physical and chemical change is a chemical change when atoms of the same or different element rearrange into a new form while a physical change has no change in form but has the potential to-Isaiah

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A  chemical change occurs when two or more substances react with each other and cause a new substance to form.You can tell when a chemical reaction has occurred because there will be a change in color, temperature, odor than the original substance.KG

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The difference between and chemical change and a physical change is simple. During a chemical change, a new substance is formed and it changes completely. But a physical change does not form a new substance because the basic structure of the molecule does not change. // MG

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FJOEIB V ITR BVIJO

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In a physical change with a substance the substance doesnt exactly change. But in a chemical change it causes the atoms of the same or different element to rearrange and form something new. Also in a chemical change there is also a reaction that either changes or makes a new substance. EK

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chemical reactions is the change of color, which is how something looks. this also changes the atoms to rearrange to form different substances, smell physical reactions is the change of shape, same substance,temp change. MY

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differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. Zaniya

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In physical change the states if  matter will change. D.W

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A chemical reaction occurs when a new substance is formed and there will be a change in either color or smell. A physical reaction is when nothing has changed at all, most likely the form could change, but not the ingredients/ substances.-G.S

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good for u

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^_amiya

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A Chemical reaction is changes that occur when atoms,ions, or molecules interact.The rates of a chemical reaction can be controlled by the amount of objects that are mixed together. Donasty

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a chemical reaction is  molecules being arranged to form a new substances. this is what causes the different odor, shape, and state of matter. the basic structure changes. a physical reaction  changes state but remains the same substance but it could freeze, melt, evaporate. water is physical and iron and rust is chemical.

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A chemical reaction is when 2 objects are mixed to create a new one.The rate of chemicals are controlled by how much of the objects are mixed. JJ

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The difference of a chemical and physical reactions are they are not the same. A chemical reaction could have smell,taste,color and bubbles with sizzle.
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The difference of a chemical and physical reactions are they are not the same. A chemical reaction could have smell,taste,color and bubbles with sizzle.
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An chemical reaction is when the chemical has an different odor, different properties, and how much light gives off and a physical reaction is when a reaction changes physically. Chemical reactions occur when an atom, ions, or molecules interact ////////Ja'Len

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Chemical reaction are changes that occur when atoms, ions, or molecules interact.

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dc

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jp

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during chemical reactions one substance will react with another to form a new and different substance b

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The difference between a chemical and physical reaction is that a chemical reaction is changes that occur when atom,etc interact.A Physical reaction is in my opinion is like a hands on experiment.You can tell if a chemical change has occurred by see if the atom lost gain or shared electrons. Donasty

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The difference of a chemical and physical reactions are they are not the same. A chemical reaction could have smell,taste,color and bubbles with sizzle.A physical reaction does the same but does not change. JJ

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A chemical reaction is change in odor, shape, texture, and something you can see. A physical reaction

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chemical reactions occur from chemicals being mixed. physical reactions occur from nature. For example you know a chemical change has occured when something has changed colors like rust. you know a physical reaction has occured because you can see it happen. MT

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A chemical reaction when 2 things have a react to one another in a way you can not see.