Unit 3 Physical and Chemical Properties and Changes Review

What are physical properties of matter?

• Characteristics of matter that you can observe or measure without changing the identity of the matter

• Traits of matter that always change the substance into a new material

• Processes used to compare different kinds of chemical reactions

• Descriptions of how matter is created from energy

Tags

NGSS.MS-PS1-4

Which definition best describes luster?

• A gentle sheen or soft glow or shine

• The ability to resist being scratched by another object

• The feel or consistency of a surface or substance

• The tendency to react with other substances

Which statement defines malleability?

• The quality of being able to be shaped into something else without breaking

• The resistance to being scratched by another object

• The amount of mass contained in a given volume

• The ability to conduct electricity

How would you describe the physical properties of the trophy shown? Select all correct descriptions.

• Luster: shiny metallic

• Color: gold or yellow

• Texture: smooth

• Texture: rough and gritty

• Luster: dull and nonmetallic

What are size-dependent physical properties?

• Measurements of these properties depend on how much matter is in the sample.

• Measurements of these properties remain the same regardless of sample size.

• These properties describe chemical reactivity with other substances.

• These properties only apply to gases at room temperature.

What is mass?

• A measure of the amount of matter that makes up an object.

• The amount of space occupied by an object or substance.

• A measure of the force of gravity acting on an object’s mass.

• The temperature of a substance.

What is volume?

• The amount of space occupied by an object or substance.

• The amount of matter in an object.

• The force of gravity acting on an object’s mass.

• The density of a material.

What is weight?

• A measure of the force of gravity acting on an object’s mass.

• The amount of matter in an object.

• The amount of space occupied by a substance.

• The mass measured in kilograms irrespective of location.

Tags

NGSS.MS-PS2-4

What are size-independent physical properties? Measurements of these properties DO NOT depend on how much matter is in the sample; these properties are the same for small and large samples.

• Properties that change when the sample size increases

• Properties whose measurements are unaffected by the amount of matter in the sample

• Properties that only apply to liquids

• Properties that depend on the shape of the sample

The temperature at which a substance changes from a solid to a liquid or vice versa describes which property?

• boiling point

• density

• melting and freezing point

• viscosity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4