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Physical & Chemical Changes and Acid & Bases

Total questions: 32

Worksheet time: 15mins

Name
Class
Date
1.

A property that is observed without making changes to the substance.

a)

Chemical Reaction

b)

Chemical Property

c)

Physical Property

d)

Physical Reaction

2.

When baking soda mixes with vinegar, a chemical reaction occurs. This reactivity is an example of a _______________.

a)

Chemical Property

b)

Physical Property

3.

What are the units for density?

a)

g

b)

mL

c)

g/cm3

d)

mL/g

4.

Calculate the density if the mass is 2g and the volume is 2cm3.

a)

2 g/mL

b)

1 mL/g

c)

2 mL/g

d)

1 g/cm3

5.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
6.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
7.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
8.
Is a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
9.
Ripping up paper ...
a)
Chemical Change
b)
Physical Change
10.
Bubbles form when two or more substances are combined ...
a)
Chemical Change
b)
Physical Change
11.
An explosion occurs ...
a)
Chemical Change
b)
Physical Change
12.
To go back to the substances original states is not possible or you would need to use chemicals. 
a)
Chemical
b)
Physical
13.
Evidence of Chemical Change.
a)
New Substance 
b)
Size change
c)
State change
d)
Mixture 
14.
Evidence of a physical change.
a)
New substance
b)
Shape Change
c)
Light produced
d)
Gas released.
15.

Choose which one is a physical property

a)

Flammability

b)

Solubility

c)

Water Reaction

d)

Magic

16.

Choose the one that is a chemical property

a)

Magnetism

b)

Size

c)

Color

d)

Reactivity with water

17.

Flammability is the ability of a substance to _________

a)

Burn

b)

Transfer heat

c)

Transfer electricity

d)

Cook

18.

Choose whether the following is a physical or chemical property: Malleability

a)

Physical

b)

Chemical

19.

Choose whether the following is a physical or chemical property: Reacts with oxygen

a)

Physical

b)

Chemical

20.

Choose whether the following is a physical or chemical property: Oxidation

a)

Physical

b)

Chemical

21.
Which of the following pH numbers indicates a neutral substance?
a)
1
b)
5
c)
7
d)
14
22.
Which of the following pH numbers indicates a strong acid?
a)
1
b)
5
c)
7
d)
14
23.
Which of the following pH numbers indicate a strong alkali?
a)
1
b)
5
c)
7
d)
14
24.
What is the pH of pure water?
a)
pH 7
b)
pH 3
c)
pH 12
d)
pH 8
25.
What substance could you use to test if a substance is an acid or alkali?
a)
Indicator
b)
Salt
c)
Catalyst
d)
Water
26.
When found in food, acids are ________
a)
Sour
b)
Bitter
c)
Salty
d)
Slippery
27.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

28.

Which of these is a property of acidic solutions?

a)

they taste sour

b)

they feel slippery

c)

they are in many cleaning products

d)

they taste bitter

29.

The _______ scale measures the strength of acids and bases.

a)

pH

b)

Hp

c)

Proton Hydrogen

d)

Hydrogen Proton

30.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
31.
Feels slippery.
a)
Acids
b)
Bases
c)
All
32.
Which is most acidic?
a)
milk
b)
Lemon Juice
c)
bleach

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