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Chemistry Accommodated

Total questions: 55

Worksheet time: 59mins

Name
Class
Date
1.

What is the name of the solid that forms after some solutions react chemically?

a)

Colloid

b)

Precipitate

c)

Solid

d)

Mixture

2.

Distillation is the process of separating liquids by using _____.

a)

A catalyst

b)

Precipitation and transpiration

c)

a centrifuge

d)

evaporation and condensation

3.

Which is a chemical change?

a)

Melting ice

b)

A candle burning

c)

Boiling water

d)

frost forming inside the freezer

4.

Which occurs when atoms link together in news ways to create a substance different from the original substances?

a)

A physical change

b)

A nuclear reaction

c)

a chemical change

d)

an inversion

5.

Which of the following indicate that a chemical reaction has occurred?

a)

The formation of gas bubbles

b)

An odor

c)

a change in color

d)

all of these indicate a chemical reaction

6.

What is needed for a combustion reaction to occur?

a)

Nitrogen

b)

Helium

c)

oxygen

d)

iron

7.

When reactants form products, a(n) ______ has occurred.

a)

Base

b)

Acid

c)

Chemical Reaction

d)

Mixture

8.

A solid formed by the chemical reaction of some solutions is a ________.

a)

Mixture

b)

Precipitate

c)

Reactant

d)

Base

9.

Which mixture is a solution?

a)

Muddy water

b)

potting soil

c)

cranberry juice

d)

milk

10.

In a colloid, particles are scattered throughout and block the passage of light.

a)

True

b)

False

11.

Mixing food coloring with water is an example of a chemical change.

a)

True

b)

False

12.

Which is an example of a chemical reaction?

a)

Ice melting

b)

wood burning

c)

salt stirred into water

d)

rain falling

13.

What is a physical combination of two or more substances that are blended together without forming a new substance?

a)

Distillation

b)

Mixture

c)

Solute

d)

Solvent

14.

Using a magnet is one way to separate a mixture of sand particles and water

a)

True

b)

False

15.

Distillation is often used to separate colloids.

a)

True

b)

False

16.

Which two substances can be mixed together to form a new substance through a chemical reaction?

a)

Baking soda and vinegar

b)

water and vinegar

c)

baking soda and water

d)

baking soda and baking powder

17.

A combustion reaction usually results in heat and ______.

a)

light

b)

oxygen

c)

an acid

d)

a base

18.

What it the process called when acids and bases react to form salt and water?

a)

Neutralization

b)

Naturalization

c)

Normalization

d)

Nationality

19.

Which happens when baking soda is mixed with vinegar?

a)

New substances are formed

b)

The substances stay the same

c)

The baking soda stays the same but the vinegar changes form.

d)

The mixture turns from a liquid into a solid.

20.

Smoke is an example of a _____ because its suspended particles are just small enough not to layer out.

a)

Colloid

b)

Positive

c)

Suspension

d)

Negative

21.

Distillation uses the different boiling points of substances to separate them.

a)

True

b)

False

22.
What is a reactant?
a)
The starting substance
b)
The ending substance
23.
What is a product?
a)
The starting substance
b)
The ending substance
24.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the reactant(s).
a)
Hydrogen and Oxygen
b)
water
25.
Using the following chemical reaction
Hydrogen + Oxygen --> water
Identify the product(s).
a)
Hydrogen and oxygen
b)
water
26.
Angelina mixes 2 substances together in a beaker. The beaker becomes hot and the liquid changes color.
Did a chemical reaction occur?
a)
yes, because the properties changed and a new substance was made.
b)
no, because the properties did not change.
27.
Which of the following are NOT signs that a chemical reaction occured?
a)
the properties changed
b)
bubbles of gas formed
c)
color stays the same
d)
smells different
28.
What is a precipitate?
a)
a change in color 
b)
a change in temperature
c)
a solid formed
d)
a gas formed
29.
Alex wants to mix two substances together and to find out if a chemical reaction happens. What should he do?
a)
test the solubility before and after mixing
b)
measure the volume before and after mixing
c)
measure the mass before and after mixing
d)
test the density of the before substance but not the after substances.
30.
a student mixes  apple juice, water, and cinnamon together. Did a chemical reaction occur?
a)
Yes, because the apple juice changed the color of the water.
b)
yes, because the temperature stayed the sam
c)
no, because the properties stayed the same.
d)
yes, because dissolving is always a chemical reaction.
31.
Burning is always a chemical reaction.
a)
True
b)
false
32.
Sandra was burning a vanilla candle. Was there a chemical reaction?
a)
no, because burning is never a chemical reaction.
b)
Yes, because the properties of the wick changed.
c)
yes, because heat was added.
d)
no, because the ash formed was a different substance.
33.
Which of the following is NOT a chemical reaction?
a)
burning a marshmallow in a campfire.
b)
a campfire
c)
acid rain turning a copper roof green.
d)
Dissolving red Koolaid in water.
34.
Which of the following is a chemical reaction?
a)
Burning bread in the toaster.
b)
melting wax in a microwave.
c)
dissolving salt in water
d)
boiling water to make steam.
35.
What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex: Gold, Silver, Oxygen, & Nitrogen
a)
element
b)
compound
c)
mixture
d)
salad
36.
What is a  pure substance made of two or more elements chemically combined in a set ratio. Ex: CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms.
a)
element
b)
compound
c)
mixture
d)
salad
37.
What is an atom which has gained or last electrons called?
a)
isotope
b)
atom
c)
ion
d)
balanced
38.
What type of property can only be observed by changing the substance into a new substance. Ex: Flammability, oxidation
a)
chemical
b)
physical
39.
What type of mixture contains visible parts (like a salad or a pizza or granite)
a)
homogenous
b)
heterogenous
40.
What is matter
a)
Anything which is solid
b)
Anything that takes up space and has mass
c)
when something is wrong
41.
Gold is an example of a(n) 
a)
pure element
b)
pure compound
c)
pure mixture
42.
Air is an example of a(n)
a)
element
b)
compound
c)
heterogenous mixture
d)
homogenous mixture
43.
In a mixture items can be separated __________
a)
chemically
b)
physically
44.
Phase changes (going from a solid to a liquid to a gas) are what types of changes?
a)
chemical
b)
physical
45.
Elements in a compound can be separated __________
a)
physically
b)
chemically
46.
who developed the modern day periodic table of elements?
a)
Darwin
b)
Shultz
c)
Hooke
d)
Mendeleev
47.
On the Periodic Table each element increases by one _________
a)
electron
b)
proton
c)
neutron
d)
letter
48.
A row across the Periodic Table where each element has the same number of energy shells
a)
column
b)
family
c)
period
49.
In a family or column, the elements have similar properties because they all have the same number of
a)
protons
b)
neutrons
c)
valence electrons
d)
electrons
50.
What is the octet rule?  How many valence electrons can the first three periods hold?
a)
8
b)
2
c)
2 8 8
d)
2 8 16
51.
Whether or not bonds form is due to the ?????
a)
valence electron configurations
b)
protons
c)
atomic mass
d)
chance
52.
In what type of bond are electrons gained or lost?  This happens between a metal and a non-metal?
a)
ionic
b)
covalent
c)
subatomic
53.
In this type of bond electrons are shared by two non-metals
a)
ionic
b)
covalent
c)
subatomic
54.
The Law of Conservation of Matter says
a)
Matter can be created, but not destroyed
b)
matter can be destroyed, but not created
c)
matter cannot be created or destroyed
55.
When heat is added to matter, the molecules tend to 
a)
move faster and farther apart
b)
slow down
c)
nothing, heat has no impact on the state of matter
d)
freeze

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