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Physical/Chemical Properties
Mass, Volume, Density Formulas
Physical Changes
Chemical Changes/ Reactions
Lab Skills
100
Name at least 5 physical properties of an object (for example, mass...)
state of matter, mass, volume, density, weight, temperature, melting point, boiling point, electrical conductivity, magnetism, solubility, color, size, texture, shape, smell, taste, sound...

NON-EXAMPLES: flammability, ability to rust, ability to oxidize
100
Mass, Volume, and Density are examples of ____ properties.

A. physical
B. chemical
A.physical
100
Name an example of a physical change. Explain why it is not a chemical change.
Answers may vary.

Reasoning should be that it does not change into a new substance (and in some cases, may be reversed).
100
Which of the following is an example of a chemical reaction?
A. melting
B. dissolving
C. rusting
D. boiling
C. rusting
100
What tool could be used to separate iron filings from a mixture with sand?
magnet
200
Name two examples of chemical properties of an object.
flammability, ability to rust, and ability to react with oxygen (oxidize)
200
Name the formulas for mass, volume, and density by using the triangle that we drew in your notebook.
mass = density x volume
(or mass = volume x density)

volume = mass / density

density = mass / volume
200
During a physical change, a new substance (is , isn't) created.

During a chemical change, a new substance (is , isn't) created.
physical: isn't

chemical: is
200
Which example describes a chemical change?
A. a match on fire
B. cutting a piece of paper
C. water boiling
D. water freezing
A. a match on fire
200
One of our labs this unit was to pour liquids into the same cup and see what happens. In this lab, we observed that the oil floated on top of the water. Additionally, we saw that the drops of water-based food coloring sank through the oil and mixed with the water.

Which physical property of matter is responsible for this phenomenon?
density
300
Match each term with its definition.

gas solid liquid

1. state of matter with no definite shape or volume
2. state of matter with a definite volume but no definite shape
3. a state of matter with a definite volume and definite shape
1. gas
2. liquid
3. solid
300
An object has a density of 2.0 g/cm3 and a volume of 4.0 cm3. What is its mass?
mass = density x volume

mass = 2.0 g/cm3 x 4.0 cm3

mass = 8 grams
300
Name an example of a physical change that involves bubbling.

Bonus (100pts): Name an example of a chemical change that involves bubbling.
Answers may vary. One example would be boiling water.

BONUS: Answers may vary. One example is baking soda + vinegar.
300
What are the 4 signs of a chemical change?
1. Formation of a gas (bubbling)
2. Formation of a precipitate (such as rust)
3. Color change
4. Temperature Change (for instance, enough heat to cause a flame)
300
Identify whether each of the following lab tools is used to measure mass or volume.

graduated cylinder
triple-beam balance
gram scale
ruler

BONUS (+100pts): Which lab tool is used to measure volume by displacement?
Mass: triple-beam balance and gram scale
Volume: graduated cylinder and ruler

Bonus: graduated cylinder
400
Match the correct term with its definition.

mass volume density

1. the mass per unit volume of a substance
2. the amount of space an object occupies
3. the amount of matter in an object
1. density
2. volume
3. mass
400
A rectangular prism has a length of 2cm, width of 3cm, and height of 4cm. What is its volume?
volume = length x width x height

volume = 2cm x 3cm x 4cm
volume = 24cm3
400
As a solid changes to a liquid, the particles move

A. farther apart
B. closer together
A. farther apart
400
Chemical reactions can ____ be reversed.

A. sometimes
B. never
B. never

Physical changes can sometimes be reversed.
400
Imagine that you have a solid cube of an unknown substance. Describe a way that you could use lab equipment to determine its volume.
Use a graduated cylinder to measure its volume by displacement of water
OR
use a ruler to measure its length, width, and height and then multiply those three numbers to calculate its volume.
500
Which of the following properties would be helpful for identifying an unknown substance?

mass
volume
density
color
melting point
boiling point
magnetism
density
melting point
boiling point
magnetism
500
A rectangular prism with a mass of 100 grams has a length of 1 cm, width of 5cm, and height of 10cm. calculate the density.
Step 1: Calculate the volume
Volume = length x width x height
volume = 1cm x 5cm x 10cm = 50cm3

Step 2: Calculate the density
density = mass / volume
density = 100g / 50 cm3 = 2 g/cm3
500
Use your understanding of the law of conservation of mass to explain how physical changes affect the mass of an object.
The mass of the object after the change is equal to the mass before the change.

The mass is not affected by a physical or chemical change.
500
Use your understanding of the law of conservation of mass to explain how chemical changes affect the mass of an object.
The mass before a chemical change (reaction) is equal to the mass after the reaction.

The mass is not affected by a physical or chemical change.
500
Your science teacher gives you an irregularly shaped mineral that you do not recognize. Describe a way that you could use lab equipment to determine its density. Describe both the lab tools and the process that you would use.
Step 1: Calculate mass using a triple beam-balance or a gram scale.

Step 2: Calculate volume by using a graduated cylinder to measure the displacement of the water.

Step 3:Calculate the density by using the formula
density = mass / volume .