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Quizizz 9

Total questions: 38

Worksheet time: 38mins

Name
Class
Date
1.

Does this picture accurately show the Law of Conservation of Mass?

a)

Yes

b)

No

2.

How many grams of OXYGEN would be needed to show conservation of mass in the example below?

a)

100 g

b)

93 g

c)

7 g

d)

0 g

3.

How many grams of coal were present at the start of the chemical change?

a)

Unknown

b)

100 g

c)

200 g

d)

50 g

4.

How many grams of CHOCOLATE POWDER are shown in the example of conservation of mass below?

a)

450 g

b)

465 g

c)

0 g

d)

15 g

5.

How many grams of LIQUID WATER are shown in the example of conservation of mass?

a)

0 g

b)

50 g

c)

100 g

d)

200 g

6.

Mass is neither created nor ______________.

a)

made

b)

destroyed

c)

changed

7.

True or False: The mass of the reactants is equal to the mass of the products?

a)

True

b)

False

8.

How many kilograms of SMOKE are shown in the example of conservation of mass?

a)

1 kg

b)

30 kg

c)

28 kg

d)

3 kg

9.

If a reaction starts with a total 54g of reactants it should produce 

a)
a total of 40g of products
b)

a total of 54g of products

c)
a total of 180 g of products
d)
None of the above
10.

O + H2 → H2O

32 g of Oxygen completely reacts with 8 g of Hydrogen to produce _____ g of water.

a)

8

b)

12

c)

24

d)

40

11.

Mg + F → MgF

24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride.

a)
62 
b)
38
c)
24
d)
14
12.

Substances present at the start of a chemical reaction are called ____.

a)
subscripts
b)
coefficients
c)
reactants
d)
products
13.

Substances that form as the result, or at the end, of a chemical reaction are called ____.

a)
products
b)
reactants
c)
coefficients
d)
subscripts
14.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)

Transformed, rearranged

d)
None of the above
15.

Label the reactants and products of the chemical reaction shown.

a)

Reactants

b)

Products

1
2
1)
2)
16.

Label the reactants and products in the chemical equation shown.

a)

Reactants

b)

Products

1
2
1)
2)
17.

What are the reactants in this chemical equation?

a)

6 CO2 + 6 H2O

b)

H2O

c)

C6H12O6

d)

C6H12O6 + O2

18.

What are the products in this chemical equation?

a)

CO2 + H2O

b)

H2O

c)

C6H12O6

d)

C6H12O6 + O2

19.

How many atoms of hydrogen are in

C6H12O6

a)

6

b)

12

c)

18

d)

2

20.

What does the number 3 represent in 4NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

21.

In the equation shown, what are the reactant(s)?

a)

N2 + H2

b)

NH3

22.

In the equation shown, what are the product(s)?

a)

N2 + H2

b)

NH3

23.

Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?

a)

4.75 grams

b)

5.25 grams

c)

5.0 grams

d)

7.5 grams

24.

Which of the models of a chemical reaction best represents the Law of Conservation of Mass?

a)

A

b)

B

c)

C

d)

D

25.

Q. 

True or False

The mass of the reactants in a chemical equation must equal the mass of the products.

a)

TRUE

b)

FALSE

26.
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
27.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
28.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
29.
Is glass breaking a chemical or phyiscal change?
a)
chemical
b)
physical
30.
Melting a chocolate bar?
a)
Physical Change
b)
Chemical Change 
31.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

32.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

33.

Which of the following can be signs that a chemical change has occurred?

a)

color change

b)

formation of a gas (bubbles)

c)

energy change

d)

All of the above

34.

Which process is a sign of a chemical change?

a)

a rotting potato gives off a bad smell

b)

a melting block of ice leaves a large puddle

c)

a cloud quickly changes shape when blown by the wind

d)

a plaster statue breaks when it falls on the floor

35.

Students observed a piece of iron change from shiny to rusty. What caused this change?

a)

a chemical reaction

b)

a heat reaction

c)

a cold reaction

d)

a physical reaction

36.
Physical or Chemical Change?  Making a paper airplane.
a)
Physical Change
b)
Chemical Change
37.
Physical or Chemical Change?  Logs burning in a campfire.
a)
Physical Change
b)
Chemical Change
38.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas

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