Matter and Physical Properties Review

What are the densities of the rock and the cube?

• Rock 1.6g/ml

  Cube 6g/cm³

• Rock 10g/ml

  Cube 5g/cm³

• Rock 5g/ml

  Cube 2g/cm³

• Rock 2g/ml

  Cube 10g/cm³

Answer explanation

Density = mass ÷ volume

Rock Mass = 50g

Rock Volume = 40-30 = 10ml

Rock Density = 50g ÷ 10ml = 5g/ml

Cube Mass = 60g

Cube Volume = LxWxH = 2x5x3 = 30cm³

Cube Density = 60g ÷ 30cm³ = 2g/cm³

Why is oil floating on the top of the liquids shown?

• Oil is the most dense

• Oil has the greatest mass

• Oil has the least volume

• Oil is the least dense

Answer explanation

Least dense objects float.

Most dense objects sink.

Which metals would be attracted to a magnet?

• Iron, Cobalt, Nickel

• Copper, Aluminum, Magnesium

• Gold, Silver, Bronze

• All metals are magnetic

Answer explanation

Only 3 metals are magnetic: Iron, Cobalt, Nickel

Tags

NGSS.MS-PS2-3

Which properties depend on the size (or amount) of the sample?

Check all that apply.

• Magnetism

• Volume

• Melting Point

• Weight

• Mass

Answer explanation

Weight, Mass, and Volume are DEPENDENT on sample size. Size matters

Density, Boiling Point, Melting Point, Freezing Point, Magnetism, Electrical Conductivity, and Thermal Conductivity are INDEPENDENT of sample size. Size DOESN'T matter

All metals have the following properties.

Check all that apply.

• Magnetism

• Electricital Conductivity

• Soluble in Water

• Thermal Conductivity

Answer explanation

All metals conduct heat and electricity. Only 3 metals are magnetic (Iron, Cobalt, Nickel)

Tags

NGSS.MS-PS2-3

What physical property is demonstrated in this diagram?

• Thermal Conductivity

• Density

• Solubility

• Magnetism

Tags

NGSS.MS-PS1-2

What is the Dependent Variable?

• Day

• Time

• Year

• No. of Hot Dogs Sold

Answer explanation

Remember DRY MIX

Dependent.....Result...Y-axis

Manipulated ...Independent..X-axis

To determine if your ring is pure gold, which property would you use?

• Mass

• Solubility

• Magnetism

• Density

Which of the following would be most soluble in water?

• Salt

• Sand

• Black Pepper

• Iron Shavings

Match the following properties with the tools used for their measurement

• Water Displacement

• Weight

• Triple Beam Balance

• Volume of Irregular Object

• Spring Scale

• Mass

• Ruler

• Volume of Regular Object