Matter and Change Study Cards

What is a physical change?

A change in physical properties, but there is no change in the substances

Classify each of the following mixtures as homogeneous or heterogenous. (a) Air, (b) a soil sample, (c) a sugar solution, (d) vinegar, (e) Chicken noodle soup

Air: Homogeneous A soil sample: Heterogenous A sugar solution: Homogeneous Vinegar: Homogeneous Chicken noodle soup: Heterogenus

Give an example of a chemical change

Burning of paper

Write the formula for determine density.

D= M/V; Density= Mass/Volume

What characteristics define a solid?

Definite volume and definite shape

What characteristics define a liquid?

Definite volume, but no definite shape

Properties that depend on the amount of matter present are called?

Extensive properties

True or False? When a substance changes from one state of matte to another, there is a change in the composition of the substance.

False

Give an example of a physical change

Grinding paper

Properties that do not depend on the amount of matter present are called?

Intensive properties

State the Law of Conservation of Mass.

It states that matter can't be created or destroyed by a chemical change.

What characteristics define a gas?

No definite volume and no definite shape

Is density a physical or chemical property?

Physical

What changes occur in a substance when that substance changes form one state of matter how to another?

Physical change

What is a chemical change?

Results in production of one or more new substances that differ in chemical properties and composition from the original substances

Describe the relative distance between the particles found in a solid, liquid, and gas.

Solid: Particles packed close together Liquid: Can move past one another Gas: At great distance

Describe the speed or movement of the particles in a solid, liquid, and has.

Solid: Vibrates; moves slowly Liquid: Medium pace; more faster than a solid Gas: Moves very rapidly

The density of a gas can vary greatly. List two factors that can change the density of a gas.

Temperature and pressure

Define density

The measure of how much mass of a substance occupies a certain amount of volume

Give an example of an extensive property.

Volume