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Chapter 15 Big Review

Total questions: 68

Worksheet time: 55mins

Name
Class
Date
1.

In which mixture can you see all of the parts?

a)

homogeneous

b)

heterogeneous

2.

In which mixture can you not see all of the parts?

a)

homogeneous

b)

heterogeneous

3.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
4.

A material with a set chemical makeup - every sample will be made up the same way.

a)

mixture

b)

pure substance

c)

element

d)

compound

5.

Water dyed with food coloring is what type of mixture?

a)

homogeneous mixture

b)

heterogeneous mixture

6.

Substances in a mixture can be separated by physical methods.

a)

TRUE

b)

FALSE

7.

What type of mixture is a salad?

a)

Heterogeneous

b)

Homogeneous

c)

Colloid

d)

Suspension

8.

Match the following

a)

Colloid

1.

Type of mixture that will scatter light.

b)

Suspension

2.

Type of mixture where a solid will settle to the bottom.

c)

Heterogeneous

3.

Type of mixture where the pieces can be told apart.

d)

Homogeneous

4.

Type of mixture where the pieces are thoroughly mixed.

9.

What type of mixture has solid particles that will settle to the bottom?

a)

Heterogeneous

b)

Homogeneous

c)

Colloid

d)

Suspension

10.

What type of mixture has particles that will scatter a beam of light?

a)

Heterogeneous

b)

Homogeneous

c)

Colloid

d)

Suspension

11.

A material with a variable composition - just a physical combination of multiple substances.

a)

mixture

b)

pure substance

c)

element

d)

compound

12.

A material made up of only one type of atom.

a)

mixture

b)

pure substance

c)

element

d)

compound

13.

A material made up of multiple atoms combined chemically.

a)

mixture

b)

pure substance

c)

element

d)

compound

14.

Can be found on the periodic table. (Select all that apply.)

a)

mixture

b)

pure substance

c)

element

d)

compound

15.

A material where the makeup does not have a set proportion or composition - can vary from sample to sample.

a)

mixture

b)

pure substance

c)

element

d)

compound

16.

Can be separated by physical means, like filtration.

a)

mixture

b)

pure substance

c)

element

d)

compound

17.

Match the following

a)

Mixture

1.

Dirt

b)

Element

2.

Carbon

c)

Compound

3.

Carbon dioxide

18.

Match the following

a)

Mixture

1.

chocolate chip cookies

b)

Element

2.

hydrogen

c)

Compound

3.

water

19.

Match the following

a)

Mixture

1.

air

b)

Element

2.

gold

c)

Compound

3.

hydrogen peroxide

20.

A bottle of orange juice says "shake well before drinking."

What type of mixture does this imply the orange juice is?

a)

Homogeneous

b)

Colloid

c)

Suspension

21.

A slow-moving stream has a layer of silt and dirt on the bottom of it that gets kicked up when you walk through.

What type of mixture is the dirty stream water?

a)

Homogeneous

b)

Colloid

c)

Suspension

22.

You, a secret super spy, spray something in the air so you can see the invisible laser grid protecting the building you're breaking into.

What type of mixture did you make?

a)

Homogeneous

b)

Colloid

c)

Suspension

23.

When you drive through the fog, your headlights get caught in the fog and can make it hard to see.

What type of mixture is fog?

a)

Homogeneous

b)

Colloid

c)

Suspension

24.

When you mix salt and water, the salt dissolves so thoroughly you can't see it any more.

What type of mixture is salt water?

a)

Homogeneous

b)

Colloid

c)

Suspension

25.

Salt is made when sodium and chlorine chemically combine.

It is represented by the formula NaCl.

Is salt a compound, an element, or a mixture?

a)

Compound

b)

Element

c)

Mixture

26.

Water is split into hydrogen and oxygen through a chemical process called electrolysis.

Is water a compound, an element, or a mixture?

a)

Compound

b)

Element

c)

Mixture

27.

Water is split into hydrogen and oxygen through a chemical process called electrolysis.

Are hydrogen and oxygen a compound, an element, or a mixture?

a)

Compound

b)

Element

c)

Mixture

28.

Sodium bicarbonate decomposes into sodium carbonate, carbon dioxide, and water.

Is carbon dioxide a compound, an element, or a mixture?

a)

Compound

b)

Element

c)

Mixture

29.

What type of property can be observed without changing the chemical composition of a substance?

a)

Physical Property

b)

Chemical Property

30.

What type of property involves how a substance reacts with or changes to another substance?

a)

Physical Property

b)

Chemical Property

31.

What type of property is a substance's flammability?

a)

Physical Property

b)

Chemical Property

32.

Iron is able to rust.

What type of property is that?

a)

Physical Property

b)

Chemical Property

33.

Iron is able to be rolled into thin sheets - it is malleable.

What type of property is that?

a)

Physical Property

b)

Chemical Property

34.

Water is liquid at room temperature.

What type of property is that?

a)

Physical Property

b)

Chemical Property

35.

When coffee is filtered, the grounds are too big to fit through the filter paper.

What type of property is that?

a)

Physical Property

b)

Chemical Property

36.

Salt is able to dissolve in water.

What type of property is that?

a)

Physical Property

b)

Chemical Property

37.

Sodium catches on fire and can explode when it touches water.

What type of property is that?

a)

Physical Property

b)

Chemical Property

38.

What type of change does NOT change the substance to a new substance?

a)

Physical change

b)

Chemical change

39.

What type of change leaves you with a new substance?

a)

Physical change

b)

Chemical change

40.

What type of change can ONLY change physical properties?

a)

Physical change

b)

Chemical change

41.

What type of change can separate or create a mixture?

a)

Physical change

b)

Chemical change

42.

What type of change can change chemical properties?

a)

Physical change

b)

Chemical change

43.

What type of change is cutting something in half?

a)

Physical change

b)

Chemical change

44.

What type of change is crumpling something up?

a)

Physical change

b)

Chemical change

45.

What type of change is sanding the surface of something?

a)

Physical change

b)

Chemical change

46.

What type of change is something burning?

a)

Physical change

b)

Chemical change

47.

What type of change is something rusting?

a)

Physical change

b)

Chemical change

48.

What type of change is something rotting?

a)

Physical change

b)

Chemical change

49.

What type of change is something boiling?

a)

Physical change

b)

Chemical change

50.

What type of change is something freezing?

a)

Physical change

b)

Chemical change

51.

What type of change is something melting?

a)

Physical change

b)

Chemical change

52.

What type of change is something dissolving?

a)

Physical change

b)

Chemical change

53.

What type of change is involved in baking?

a)

Physical change

b)

Chemical change

54.

What do we call the substances we have BEFORE a reaction happens?

a)

Reactants

b)

Products

c)

Pure Substance

d)

Mixture

55.

What do we call the substances we have after a reaction happens?

a)

Reactants

b)

Products

c)

Pure Substance

d)

Mixture

56.

Hydrogen and oxygen gas combines to form water.

What are the reactants in this situation? Choose all that apply.

a)

Hydrogen

b)

Oxygen

c)

Water

57.

Hydrogen and oxygen gas combines to form water.

What are the products in this situation? Choose all that apply.

a)

Hydrogen

b)

Oxygen

c)

Water

58.

20 grams of sodium combine with 10 grams of chlorine to form sodium chloride.

What are the products in this situation? Choose all that apply.

a)

Sodium

b)

Chlorine

c)

Sodium Chloride

59.

20 grams of sodium combine with 10 grams of chlorine to form sodium chloride.

What are the reactants in this situation? Choose all that apply.

a)

Sodium

b)

Chlorine

c)

Sodium Chloride

60.

20 grams of sodium combine with 10 grams of chlorine to form sodium chloride.

What is the mass of sodium chloride produced?

61.

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams of reactant B should we have? 

62.
Jason poured 500 grams of water into a container and tightly sealed it. The water was allowed to freeze. Which is most likely true about the ice that formed?
a)
The mass of the ice is the same as the mass of the water.
b)
The mass of the ice is greater than the mass of the water.
c)
The ice formed is a different substance than the water.
d)
The ice formed is the same temperature as the water.
63.

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. Assuming nothing leaves the glass, if Anthony weighs the water and baking soda solution, what will its mass be?

a)
4.75 grams
b)
5.0 grams
c)
5.25 grams
d)
7.5 grams
64.

A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample?

a)

The heat caused the chemical to become less dense.

b)

The reaction gave off more heat than was added.

c)

Some of the lighter particles were destroyed.

d)

Some of the particles escaped as a gas formed.

65.

A student pours 5.49 g hydrochloric acid (HCl) into an open beaker that contains a piece of magnesium (Mg). The Total mass of the product is 5.73 g. What was the mass of the magnesium?

a)

5.71 g

b)

11.22 g

c)

0.24 g

66.

20 grams of iron combine with some amount of oxygen to form 22.5 grams of rust.

What are the products in this situation? Choose all that apply.

a)

Iron

b)

Oxygen

c)

Rust

67.

20 grams of iron combine with some amount of oxygen to form 22.5 grams of rust.

What are the reactants in this situation? Choose all that apply.

a)

Iron

b)

Oxygen

c)

Rust

68.

20 grams of iron combine with some amount of oxygen to form 22.5 grams of rust.

What is the mass of oxygen?