Unit 1A [Grade 8]

Properties of Matter

100

Give an example of a NON-CHARACTERISTIC property that you can MEASURE.

Examples: Mass, volume

200

Explain why density is a CHARACTERISTIC property.

It can help identify a substance.

300

Are melting point and boiling point characteristic or non-characteristic properties? Explain.

They are both characteristic because they help identify a substance.

400

What properties of matter can you look for to distinguish a cup of water from a cup of vinegar?

Many answers possible (test pH, use litmus paper, boiling point, melting point, density, etc.)

500

Is using pH paper to determine the pH of a substance testing for a characteristic or non-characteristic property? Explain your answer.

It's characteristic because pH can help identify a substance.

States of Matter

100

TRUE OR FALSE? Drinking water is in the liquid state.

True

200

TRUE OR FALSE? Solid particles have more energy than gas particles.

FALSE

300

What are the 3 states of matter? List them from LOWEST to HIGHEST particle energy.

Solid, liquid, gas

400

Describe how liquid particles are arranged and move.

They are close together, but a little farther than solids. So they can move and slide past each other.

500

Name the state(s) of matter that have an INDEFINITE shape but a DEFINITE volume.

Liquids

Density

100

What is the formula for density?

D = M/V

200

When using the formula for density, what do you plug in your calculator?

-- Mass MINUS volume

--Mass PLUS volume

--Mass DIVIDED by volume

--Mass MULTIPLIED by volume

Mass DIVIDED by volume (the / represents a division)

300

Give two examples of density units we used in class.

g/mL

g/cm³

400

Calculate the density of a ball that has a mass of 50 g and a volume of 100 cm³.

0.5 g/cm³

500

Calculate the mass of a ball if its density is 6 g/mL and its volume is 12 mL.

72 g

Acids and Bases

100

TRUE OR FALSE: Acids have pH values greater than 7.

FALSE

200

What does neutral mean? (What is the pH?)

pH=7

Neither an acid or base

300

What is a weaker base: pH=9 or pH=13?

pH=9 is a weaker base

400

What is more accurate: litmus paper or pH paper?

Explain.

pH paper, because it gives you the exact pH value.

500

Heartburn happens when acid from your stomach makes its way up your esophagus. What kind of substance would you drink to feel better? 

-Lemon juice (pH 2.0)

-Baking soda and water (pH 8.2)

Explain your choice!

Baking soda and water, because it is a base. Acid + Base makes something neutral

Units

100

Convert:

1 mL = _____ cm³

1

200

Convert:

40 mL =  __________ L

0.04

300

Convert:

3 m = _______ mm

3000

400

Convert:

21 L = ______ cm³

21000

500

Convert:

0.7 g = ____ mg

700