VST 2 Review

Front

What are the signs of a chemical change?

Back

Signs of a chemical change include: new odor, gas bubbles, color change, new material produced, and heat/light released.

Front

What factors affect the rate of dissolving?

Back

Factors that affect the rate of dissolving include stirring, increasing temperature, and particle size.

Front

How does decreasing mass affect the movement of an object?

Back

Decreasing mass makes the object easier to move.

Front

What happens to a circuit when the switch opens?

Back

When the switch opens, both light bulbs will turn off.

Front

What is happening to water when it boils and turns into steam?

Back

The water is going through a physical change as it escapes as steam.

Front

Define a chemical change.

Back

A chemical change is a process where substances combine or break apart to form new substances.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the role of temperature in dissolving substances?

Back

Increasing temperature generally increases the rate at which a substance dissolves.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.