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What are the 3 subatomic particles of an atom?

Answer: the three subatomic particles are;
Protons
Neutrons
Electrons

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Why are some element a more reactive than others?
Answer: the more outer orbits an element has the more reactive it is.

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a) near beaches
b) near deserts
c) near volcanoes

Answer: near volcanoes

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a) Copper
b) Aluminum
c) Zinc

Answer: Copper

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How many protons are in the nucleus of sulphur?

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How many protons are in the nucleus of sulphur?

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a) 8
b) 16
C) 32

Answer: 16

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How do you find the number of protons, neutrons and electrons?
Answer= The number of protons is the same as the atomic number and the number of electrons is the same as the number of protons. To findthe number of neutrons you have to subtract the atomic number from the atomic mass

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What is the difference between a homogeneous and a heterogeneous mixture?

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What is the difference between a homogeneous and a heterogeneous mixture?

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A homogeneous mixture is when two or more substances mix and it remains the same uniform appearance, for example kool aid is made up of many things but remains the same. A heterogeneous mixture is the non-uniform mixture, for example cereal and milk, when there mixed you can two substances separately.

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Whats the difference between an element amd a compound?
Answer: An element is composed of identical atoms and a compound is composed of 2 or more different kinds of elements.

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What is the difference between the particles in solids, liquids and gases?

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What is the difference between the particles in solids, liquids and gases?

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Answer: In a solid the particles are attracted to each other and can just vibrate in place, liquid particles have a smaller attraction and can slide past each other, gas particles are the most spread apart and move very quickly.

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How many neutrons are in magnesium
a) 12
b) 24
c) 6
e) 26
Answer= 12

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What do Heterogenous and Homogenous mixtures contain?
Answer: they contain 2 or more pure substances.

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a) Ph
b) Po
c) P
Answer= P

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a) All matter is made of very small atoms, all particles in a pure substance are the same, particles are always moving, particles in a substance are attracted to each other.
b) All matter is made up of very small atoms, particles in substances are always different, particles sometimes stop moving to become solids, matter is only in some things.

Answer: a) All matter is made of very small atoms, all particles in a pure substance are the same, particles are always moving, particles in a substance are attracted to each other.

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A)1999
B)2014
C)1868
D)1870
Answer:C 186

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What are two types of ions?
Answer: Cations and Anions.

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A)Uuq
B)Uub
C)Uae
D)Uer
answer:B

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The molecular compound MgCl2 is equal to what?

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The molecular compound MgCl2 is equal to what?

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A) 1 atom of Magnesium and 3 atoms of Chlorine
B) 2 atoms of Magnesium and 2 atoms of Chlorine
C) 1 atom of Magnesium and 2 atoms of Chlorine

Answer is c)

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Name three properties of molecular compounds. 

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Name three properties of molecular compounds. 

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a) Made up of non-metal elements, low melting and boiling points, good conductors of heat and electricity.
b) Soft, not soluable in water, poor conductors of heat and elextricity.
c) Need to contain at least one metal, strong attraction, high boiling points.

Answer: b) Soft, not soluable in water, poor conductors of heat and electricity.

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A) the left side of the table of elements
B) the right side of the table of elements
C) the middle of the table of elements

Answer is a)

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G: protons; 19. Mass; 39
R: neutrons
A: mass - (P+) = neutrons
S: 39 - 19= 20
S: there are 20 neutrons in postassium

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What's the formula for density
a) m/v
b) m×v
c) v/m
Answer= m/v

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a) Air
b) Hot chocolate with marshmallows
c) Apple juice

Answer: b) Hot chocolate with marshmallows

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The number of electrons is equal to what?

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The number of electrons is equal to what?

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A) the number of protons
B) the atomic mass
C) the number of neutrons

Answer is a)

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Do protons have a negative or positive charge? 

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Do protons have a negative or positive charge? 

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a) Negative
b) Positive

Answer: b) Positive

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How many electrons can fit on the first shell?

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How many electrons can fit on the first shell?

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A) 8
B) 2
C) 18

Answer: B

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Particles are always moving
A particle changes speed based on state
All particles are very tiny

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What's the name given to the row of electrons farthest away from the nucleus

a) proton

b) Valence electron

c) outer ring

Answer: Valence electron

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A)69
B)57
C)83
D)79

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What is the family name of the 17th group on the periodic table?

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What is the family name of the 17th group on the periodic table?

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a) Boron Family
b) Alkai Earth Family
c) Halogen Family

Answer: c) Halogen Family

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What is the chemical symbol for platinum 

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What is the chemical symbol for platinum 

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A)pt
B)pl
C)K

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Which of the three states of matter have the fastest moving particles. 

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Which of the three states of matter have the fastest moving particles. 

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A) Solid
B) Liquid
C) Gas

Answer: C

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What does a bohr Rutherford diagram represent

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What does a bohr Rutherford diagram represent

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A) mass
B) amout of electrons
C) state of an object

answer: B

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How many valence electrons are in the noble gas family

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How many valence electrons are in the noble gas family

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A) 1
B) 5
C) 8

Answer: C

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Which Element is a noble gas
a) oxygen

b) Lithium

c) Argon

Answer: argon

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A) change in state
B) change in size
C) change in smell

Answer: C

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A) a positively charged ion
B) a negativity chaged ion
C) a neutral ion

Answer: A

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An atom that loses electrons and therefore has a positive charge

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Whats the difference between a anion and cation

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Whats the difference between a anion and cation

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A) a anion is negatively charged and cation is postiviely charged
B) a cation is negatively charged and a anion is positively charged
C) there is no difference

Answer is A

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An atom that gains or loses electrons and therefore has a charge.

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A) marshmellow burning
B) ice melting
C) chopping onions
Answer: a

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What element corresponds with the symbol Na

a) Nitrogen

b) magnesium

c) sodium

Answer: c

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A)Cs
B)Co
C)Ca
D)Ce
answer:Ca

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A) a salad
B) a cookie
C) coffee

Answer: coffee

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A) v/m
B) m/v
C) vxm
Answer: b

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How many electrons can you have on the 3rd shell?

a) 8
b) 18
c) 2

Answer = a

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What's a heterogeneous mixture?

a) You can only see one new mixture

b) You can see both separate products in the mixture

c) It's a fancy way of saying compound

Answer = b

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What ones are part of the alkali metals group.

a) Caesium

b) Radium

c) Mercury

Answer = a

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How do you find the amount of neutrons an element has?

Answer = You subtract the amount of protons the element has, from the atomic mass of the element.

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What happens to particles when heat is added to them.

Answer = The particles start to vibrate/move quicker, and the space between particles grow larger.