NC Check-in Physical Science- CFES

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often accompanied by a change in energy, color, or the production of gas.

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, such as changes in state (solid, liquid, gas).

Front

How can force affect the motion of an object?

Back

Increasing the force applied to an object can make it accelerate faster, while decreasing the force can slow it down or stop it.

Front

What does a horizontal line on a motion graph indicate?

Back

A horizontal line on a motion graph indicates that the object is not in motion at that point in time.

Front

What happens to the total weight of a system when ice melts in water?

Back

The total weight of the system remains the same; it will still equal the combined weight of the ice and water before melting.

Front

What is the definition of mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms.

Front

What is the difference between speed and velocity?

Back

Speed is the distance traveled per unit of time, while velocity includes both speed and direction of motion.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice, where the ice changes from solid to liquid but remains water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron when it reacts with oxygen and moisture.

Front

What is the principle of conservation of mass?

Back

The principle of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it remains constant.