Substance and Its Changes

Which statement correctly describes the density of substances?

• A substance with a higher mass always has higher density

• Density is the ratio of mass to volume

• All liquids have the same density

• Density is unrelated to mass or volume

What is the melting point of gold?

• 1064°C

• 2750°C

• 2856°C

• 1413°C

Tags

NGSS.MS-PS1-4

What happens to the volume of gas when it is compressed?

• It remains the same

• It decreases

• It increases

• It doubles

What is the process called when a gas turns directly into a solid?

• Melting

• Condensation

• Crystallization

• Sublimation

Why can the scent of a perfume sprayed in one room be detected in another room?

• Gas particles remain stationary in the air

• Gas particles move randomly in all directions

• Stronger gas particles push weaker ones

• The room's ventilation system carries the scent

Match the following

• LIQUID

• Fixed shape, fixed volume

• GAS

• Shape changes to fit container, volume changes with pressure

• SOLID

• Shape changes to fit container, fixed volume

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following does not involve a change in the physical state of a substance?

• Sublimation

• Condensation

• Dissolution

• Melting

Tags

NGSS.MS-PS1-4

Reorder the following materials based on their melting points, from lowest to highest:

• Water

• Aluminum

• Wax

• Gold

• Gemstone

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When ice melts, it:

• Loses heat

• Absorbs heat

• Remains at a constant temperature

• Changes volume significantly

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

An object has a volume of 100 cm³ and a mass of 500 grams. What is its density in g/cm³?

• 2 g/cm³

• 5 g/cm³

• 0.5 g/cm³

• 10 g/cm³