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Chemistry Chapter 3 Atoms: The Building Blocks of Matter

Total questions: 16

Worksheet time: 4hrs 0mins

Name
Class
Date
1.
Everything is made up of this.
a)
liquid
b)
earth
c)
matter
d)
fire
2.

A mixture that can be separated and the parts are evenly mixed......

a)

heterogeneous mixture

b)

substance

c)

solubility

d)

homogeneous mixture

3.
What tool might a scientist use to demonstrate the Law of Conservation of Matter?
a)
ruler
b)
beaker
c)
thermometer
d)
balance scale
4.
The principle of conservation of mass is true for
a)
Physical Changes
b)
Chemical Changes
c)
Neither
d)
Both
5.
What does the principle of conservation of mass mean?
a)
The total mass of the reactants is more than the products
b)
Matter is not created or destroyed
c)
The total mass of the reactants is less than the products
6.
Can matter be created or destroyed?
a)
Yes, it can be created.
b)
Yes, it can be destroyed.
c)
No, matter is always conserved
d)
None of these
7.
The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
a)
True
b)
False
8.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
9.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
10.
What is the law of conservation of mass?
a)
The amount of matter changes when reacted or changed.
b)
The mass of all reactants are changed during a physical or chemical change
c)
The mass of the reactants equals the mass of the products
d)
The mass of the products is different than the mass of the reactants.
11.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
12.
How much does a 5 gram Hershey's kiss weigh after it is melted in the microwave?
a)
5 grams
b)
3 grams
c)
7 grams
13.
If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 
a)
2
b)
4
c)
6
d)
You need more information to answer this question
14.

Why does this picture demonstrate the Law of Conservation of Mass?

a)

the number of atoms of each element are the same on both sides

b)

they start out separate and end up combined

c)

the same elements are used

d)

it doesn't demonstrate the Law of Conservation of Mass

15.

The fact that every sample of a particular chemical compound contains the same elements in exactly the same proportions by mass is known as the law of

a)

conservation of energy.

b)

conservation of mass.

c)

atomic theory.

d)

definite proportions.

16.

If two or more compounds are composed of the same two elements, then the ratio of the masses of the second element that is combined with a certain mass of the first element is always a ratio of small whole numbers. This statement is called the law of

a)

definite proportions.

b)

conservation of mass.

c)

atomic theory.

d)

multiple proportions.