MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

What is the measurement of the liquid above?

a. 10 milliliters

b. 12 grams

c. 11.5 milliliters

d. 11.5 grams

Correct Answer: c

MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Which of the following is true of chemical properties?

a. They describe the phase the substance is in.

b. They describe characteristics of a substance such as size, color, and shape.

c. They explain how the substance reacts with other substances.

d. They describe what chemical changes the substance is currently going through.

Correct Answer: c

MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

While investigating the chemical and physical properties of a new substance created in class, Sally and Tyler record the following observations:

The new substance is solid.

The new substance forms into thin flat sheets.

The new substance is smooth.

The new substance will burn.

The new substance looks like it will tear easily.

The new substance looks like it will dissolve in acid easily.

Which of their statements would be an inference about a chemical property?

a. The new substance forms into thin flat sheets.

b. The new substance is smooth.

c. The new substance looks like it will tear easily.

d. The new substance looks like it will dissolve in acid easily.

Correct Answer: d

MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

A scientist places 10 mL of water in a test tube and heats the liquid over a Bunsen burner for 2 minutes. The liquid boils and escapes as steam. This experiment is a good example of

a. a chemical change involving phase changes

b. a physical change involving phase changes

c. a chemical change involving chemical reactions

d. a physical change involving chemical reactions

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

What is one way that a plastic soda bottle is better than a glass one?

a. It is transparent

b. It doesn’t flavor the drink

c. It is recyclable

d. It doesn’t shatter

Correct Answer: d

MC	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Both hydrogen and oxygen are flammable. Water is made up of 2 parts Hydrogen and 1 part

Oxygen, why doesn’t water burn?

a. Water will burn if you get it hot enough.

b. Because water is a liquid and hydrogen and oxygen are gases.

c. When elements combine physically they form new substances with different properties.

d. When elements combine chemically they form new substances with different properties.

Correct Answer: d

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

A cube of sugar has the following properties.

1. Mass = 2 grams

2. Density = 8 g/cm³

3. Burns when heated

4. Composed of small, white crystals

5. Bubbles and fizzes when heated

Mark each of the following above as a physical property (P) or a chemical property (C).

Correct Answers:

1. P

2. P

3. C

4. P

5. C

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Terry and Jean experimented with several items to see what would happen under different conditions. Below is the data table they wrote at the conclusion of the experiment.

	Put in water over night	Held in candle flame for 30 seconds	Connected to the terminals of a 12 volt battery
Steel wool	Rusted	Burned	Burned
Paper	Got soppy	Burned	No change
Copper wire	Got wet	Got hot, bent in the middle	Got hot, melted in half
Wood splinter	Swelled up with water	Burned	No change

1. Which substance changed chemically under all three conditions?

1. steel wool
2. paper
3. copper wire
4. wood splinter

2. Which substance changed physically under all three conditions?

1. steel wool
2. paper
3. copper wire
4. wood splinter

3. What would be a good conclusion for this experiment?

1. Steel wool is the most reactive.
2. Paper is the most reactive.
3. Copper wire is the most reactive.
4. Wood splinter is the most reactive.

Correct Answer:

1. a
2. c
3. a

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Study the list of potential chemical and physical changes below. Then answer the questions that follow.

A. Jim uses baking soda and vinegar to make bubbles to erupt a model volcano.

B. Fred left a sack of steel nails out on the porch where they got wet and rusted.

C. Jack scraped flint across steel to light his cigarette lighter.

D. The door panel of Jan’s old truck has the paint scraped off and is rusted.

E. Jane strikes a sulfur match rapidly across a hard surface to light it.

F. Jill uses baking powder in her biscuits to cause bubbles to form in the cooking dough.

1. What are the changes described above?

a. Physical changes of size, shape, and color

b. Physical changes of phase, volume, and density

c. Chemical changes of respiration, pH, and Photosynthesis

d. Chemical changes of rusting, burning and gas production

2. What would indicate that burning might take place in some of these chemical reactions?

a. wet metal in air

b. bubbles in air

c. heat generated

d. energy is absorbed

3. What conditions would indicate rusting might take place in some of these chemical reactions?

a. wet metal in air

b. bubbles in air

c. heat generated

d. energy is absorbed

Correct Answers:

1. d

2. c

3. a

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

The following data was collected by a group of students as they tested four different types of plastics.

Plastic	Acetone	Flame test	Heat	Crease color
1	No effect	Green color	Softens	None
2	Softened	No change	No change	White
3	No effect	Red color	Softens	None
4	No effect	Green color	Softens	None

1. Which of the plastics might be the same?

a. 1 & 2

b. 2 & 3

c. 3 & 4

d. 1 & 4

2. Which plastic would be best to put in a microwave?

a. 1

b. 2

c. 3

d. 4

3. Which plastic would be unsafe to use to store products that contain acetone?

a. 1

b. 2

c. 3

d. 4

Correct Answers:

1. d

2. b

3. b

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Study the list of processes that can bring about chemical and physical changes below. Then answer the questions that follow.

A. Cooking oil was splashed on a hot stove burner.

B. Electricity was run through water to separate the hydrogen from the oxygen (Electrolysis).

C. A shovel was left stuck in the mud over the winter.

D. Baking soda and hot water were used to clean the corrosion off a car battery’s terminals.

E. A magnifying glass focused the sun’s rays to their brightest point on a piece of paper.

F. A bicycle chain was left out in the rain without any oil.

1. Which items on the list would most likely deal with rusting?

a. F, E

b. B, E

c. A, D

d. C, F

2. Which items on this list would most likely give off gas?

a. B, D

b. A, E

c. B, F

d. C, F

3. Which items on the list would most likely burn?

a. A, E

b. F, C

c. B, D

d. A, F

Correct Answers:

1. d

2. a

3. a

I	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Examine the following table to answer the questions that follow.

Substance	Physical Description	Reaction to Acid (weak HCl solution)	Reaction to Water	Reaction to Heat
Sugar	Small, white, hard crystals	None	None	Caramelizes (turns brown and bubbly)
Salt	Small, white, hard crystals	None	None	None
Baking Soda	Fine, white, smooth powder	Bubbles and fizzes	None	None
Flour	Fine, white, smooth powder	None	None	None

1. Which substance would be considered the most reactive with acid?

a. sugar

b. salt

c. baking soda

d. flour

2. Which of these tests measured chemical properties?

a. physical description and reaction to heat

b. physical description and reaction to acid

c. reaction to water and physical description

d. reaction to acid and reaction to heat

Correct Answers:

1. c

2. d

E	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

List three physical properties that are advantages of plastics over paper, glass, and metal for food storage. Explain why each is an advantage.

Scoring Guide:

4 Student lists and clearly explains 3 advantages.

3 Student lists and clearly explains 2 advantages

2 Student lists and clearly explains 1 advantage.

1 Student lists at least 1 advantage.

E	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Suppose you place several ice cubes in a glass of water at room temperature. Describe at least three physical changes that might occur over a period of time.

Possible Answers:

1. Ice melts.

2. Temperature of water decreases, then eventually increases back to room temperature.

3. Volume of water increases.

4. Water drops may condense on the outside of the glass.

5. Evaporation of water.

E	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Describe several substances and how technology has used their chemical and physical properties to improve your life in the following areas:

1. Personal

2. Home

3. Community

4. Environment

Scoring Guide:

4 Student shows excellent thought and insight. Clearly describes at least 4 effects in each area.

3 Student shows good thought and insight. Clearly describes at least 3 effects in each area.

2 Describes at least 2 effects in each area.

1 Describes at least 1 effect in each area.

P	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various substances.
ILO:

Terry is experimenting with a variety of substances. She is expected to classify them according to their chemical and physical properties. From the list of properties provided below, create a list of categories that she could use to classify these substances according to their chemical properties.

Reacts with water Malleable

Burns Ductile

Evaporates at room temperature Gives off gas

Soft Non-ductile

Does not react with water Does not give off gas

Non-flammable Non-malleable

Hard Gives off heat

Melts at room temperature Absorbs heat

Scoring Guide:

Correct answers will include at least two of the following categories:

Reacts with water/does not react with water, gives off gas/does not give off gas, flammable/non-flammable, gives off heat/absorbs heat. (these matched categories are all chemical properties.)

Incorrect answers will include some of the following matched physical properties:

Hard/soft, melts at room temperature/evaporates at room temperature, malleable/non-malleable, ductile/non-ductile

P	8^th Grade Integrated Science	Standard: 01
Objective: 01. Describe the chemical and physical properties of various subjects.
ILO: