Physical Science Mid-term Exam 2022

Front

What is matter?

Back

Matter is defined as anything that has mass and takes up space.

Front

What is an example of a chemical change?

Back

Grilling a hamburger is an example of a chemical change.

Front

What is a quantitative observation?

Back

A quantitative observation is one that includes a number or measurement, such as 'The liquid boils at 100°C.'

Front

What happens when ice cream changes from a solid to a liquid?

Back

The process is called melting.

Front

What do positive ions tend to do?

Back

Positive ions tend to lose electrons.

Front

What is the definition of 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 difference between kinetic and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is the boiling point of water at sea level?

Back

The boiling point of water at sea level is 100°C.