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Questions

How is this topic relevant today?
These topics are relevant today because they help us understand the world around us.

What did you know about your topic prior to the research project, and what new information have you learned during the research part of this assignment?
Our project was all review and we didn't do any research.

Semester 1 reflection: How have you personally grown in science this year thus far?
Kristin: I have personally grown this year because I have really understood all the labs and assignments this year. I struggled with some points throughout the year like balancing equations. I didn't completely get it at first but it made more sense after we practiced. Now I feel more confident about balancing equations. The steps really ended up helping me out.
Camille: I have personally grown in science this year because before middle school I didn't know much about science. In elementary school, we learned basic stuff. I have learned many things in unit 1 and unit 2. Some of the things that we learned this year I've struggled with at first but eventually I understood it. The things that I've learned helped me understand the world around me.

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Exothermic & Endothermic
Endothermic reactions absorb energy and feel cold. Exothermic reactions release energy and feel hot.

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Physical & Chemical Changes
A physical change is a change in size, shape, or color and it can be reversed. A chemical is a change is the appearance of a new substance, also known as  the molecules changing. A Chemical change cannot be reversed. The indicators of a chemical change are gas forming, light/heat appearing, color change, and odor change. Some indicators of a physical change are change in size, shape, or State of Matter. Some examples of a physical change are a pencil breaking, paper ripping, and ice melting. These are physical changes because they can all be reversed and the molecules did not change. Some examples of chemical changes are firewood burning, a metal nail rusting, and baking a cake. These are all  chemical changes because the molecules did change.

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States of Matter
The main states of matter are solids, liquids, and gases.  Matter can change from one state to another. Changes in states of matter occur when temperature increases or decreases.

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Balancing Equations
When balancing equations there are 4 quick and easy steps.      Step 1: Make a list of all the elements.
Step 2: Count how many of each element you have
Step 3: Check if the equation is balanced
Step 4: If the equation is not balanced, then balance it.

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The Law of Conservation of Mass
The Law of Conservation of Mass states that matter cannot be created or destroyed. In chemistry, we use this law to balance chemical equations. The number and the type of atoms must be the same for the reactants and products.