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Quizizz 19

Total questions: 35

Worksheet time: 55mins

Name
Class
Date
1.

Which of the following is a property of acids?

a)

They taste bitter.

b)

They turn blue litmus paper red.

c)

They feel slippery to the touch.

d)

They have a pH greater than 7.

2.

What is the law of conservation of mass?

a)

Mass can be created and destroyed in a chemical reaction.

b)

Mass is always lost in a chemical reaction.

c)

Mass is neither created nor destroyed in a chemical reaction.

d)

Mass is always gained in a chemical reaction.

3.

Which of the following is a property of bases?

a)

They taste sour.

b)

They turn red litmus paper blue.

c)

They have a pH less than 7.

d)

They react with metals to produce hydrogen gas.

4.

In the chemical equation 2H2+O2→2H2O2H_2 + O_2 \rightarrow 2H_2O , what are the reactants?

a)

H2OH_2O

b)

H2H_2 and O2O_2

c)

H2OH_2O and O2O_2

d)

H2H_2 and H2OH_2O

5.

Which of the following statements is true about the law of conservation of mass in a closed system?

a)

The total mass of reactants is less than the total mass of products.

b)

The total mass of reactants is greater than the total mass of products.

c)

The total mass of reactants is equal to the total mass of products.

d)

The total mass of reactants can be either greater or less than the total mass of products.

6.

What is the pH range of acids?

a)

0 to 7

b)

7 to 14

c)

0 to 14

d)

7

7.

In the reaction CaCO3→CaO+CO2CaCO_3 \rightarrow CaO + CO_2 , what is the product?

a)

CaCO3CaCO_3

b)

CaOCaO and CO2CO_2

c)

CaOCaO

d)

CO2CO_2

8.

Which of the following is a common property of both acids and bases?

a)

They both taste sour.

b)

They both conduct electricity.

c)

They both turn litmus paper red.

d)

They both have a pH of 7.

9.

If 10 grams of hydrogen react with 80 grams of oxygen to form water, what is the total mass of water produced according to the law of conservation of mass?

a)

70 grams

b)

80 grams

c)

90 grams

d)

100 grams

10.

Which of the following is a characteristic of a neutral solution?

a)

It has a pH of 0.

b)

It has a pH of 7.

c)

It has a pH of 14.

d)

It turns litmus paper red.

11.

What is underlined in the chemical equation below?

Na + Cl ---> NaCl

a)

Products

b)

Reactants

12.

In the chemical equation below, the product is....

Na + Cl ---> NaCl

a)

Na

b)

NaCL

c)

Cl

d)

NaCl

13.

Select all the Reactants

a)
b)
c)
14.

Select all the reactants

a)
b)
c)
15.
Substances that form as the result of a chemical reaction
a)
products
b)
reactants
c)
coefficients
d)
subscripts
16.

The number to the lower side of an element is a  (H2O)

a)
Subscript
b)
Superscript
c)
Coefficient
d)
Charge
17.

The number in front of a compound or element is a  (3H2O)

a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
18.

The Law of Conservation of Mass states Matter is NEITHER created nor destroyed.

a)

True

b)

False

19.

How many oxygen atoms are in this chemical formula?

a)

6 oxygen atoms

b)

2 oxygen atoms

c)

3 oxygen atoms

d)

4 oxygen atoms

20.
A chemical reaction is balanced when
a)
both sides have the same elements
b)
Both sides have the same  number of atoms
c)
Same subscripts
d)
Same coefficients
21.
If a reaction starts with a total 75g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
22.

In a chemical reaction, the number of atoms in the products will always equal which amount?

a)

the number of atoms in the reactants

b)

half of the number of atoms in the reactants

c)

twice the number of the atoms in the reactants

d)

thrice the number of the atoms in the reactants

23.
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
24.

________ are the starting substances in a chemical equation.

a)

Reactants

b)

Producer

c)

Reaction

d)

Products

25.
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
26.

What is the right part of a chemical equation called...

2H2 + O2 → 2H2O

a)

Reactants

b)

Products

c)

Yield

d)

Chemical Equation

27.

A substance with a pH of 6 is

a)

a base

b)

an acid

c)

neutral

28.

A substance with a pH of 8 is

a)

a base

b)

an acid

c)

neutral

29.

A substance that tastes sour

a)

base

b)

acid

c)

neutral

30.

A substance that tastes bitter

a)

base

b)

acid

c)

neutral

31.

A substance that is corrosive to metals

a)

base

b)

acid

c)

both

d)

neither

32.

Pure water is

a)

a base

b)

an acid

c)

neutral

d)

none of the above

33.

Lemon juice is

a)

a base

b)

an acid

c)

neutral

d)

none of the above

34.

A substance with a pH of 7 is

a)

a base

b)

an acid

c)

neutral

d)

none of the above

35.

What is the term for "A scale that measures the acidity of a solution"?

a)

Indicator

b)

pH scale

c)

Balance

d)

Neutralization

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