Density Review

What are the 3 States of Matter

• Solid, Iron, Gas

• Solid, Liquid, Gas

• Iron Liquid Gas

• Metals, nonmetals, metalloids

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The particles of this state of matter are close together

• Solid

• liquid

• Gas

What does ice float in water?

• Ice cubes are less dense than water

• Ice cubes are more dense than water

Answer explanation

Ice cubes are less dense than water, causing them to float. This is due to the unique structure of water molecules in solid form compared to liquid form. This causes the ice molecules to be further apart (less dense) than the water molecules (more dense).

Why does a penny Sink in water

• Pennies are less dense than water

• Pennies are more dense than water

Answer explanation

Pennies are more dense than water, causing them to sink when placed in water due to the principle of buoyancy.

Which ones can be units for density?

(Multiple responses)

• g/ mL

• g

Answer explanation

Units for density include g/mL and g/cm^3. These units represent mass per unit volume, which is essential for density calculations.

What is the mass of a 25 cm³  liquid if it has a density of 5 g/cm³?

• 125 g

• 5 g

Answer explanation

The mass of the liquid can be calculated using the formula: Mass = Density x Volume. Given Density = 5 g/cm^3 and Volume = 25 cm^3, Mass = 5 g/cm^3 x 25 cm^3 = 125 g. Therefore, the correct answer is 125 g.

Helium balloons rise on earth because

• helium is less dense than air
• helium is more dense than air
• helium is cooler than air
• helium is warmer than air

In this image, the VOLUME of A is _____ the volume of B

• equal to

• greater than

• less than

Calculate the density of the rectangular prism

• 2 g/cm³

• 4 g/cm³

• 6 g/cm³

• 8 g/cm³

Three liquids and two solids are placed in a graduated cylinder. The substances arrange themselves in the cylinder according to their densities. Use the information to identify the liquids and solids in the graduated cylinder. start with the top solid as substance 1, and the top liquid as substance 2, and so on

• Mercury

• water

• Cork

• Gasoline

• Gold