Mid-term Exam

Front

What is the speed of an object at 5 seconds if it is moving at 0.6 m/s?

Back

The object is moving at a speed of 0.6 m/s.

Front

What is the best evidence of a chemical change?

Back

A flame burns on the surface of a solid.

Tags

NGSS.MS-PS1-2

Front

True or False: All chemical reactions create new substances.

Back

True.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the sum of all forces acting on an object called?

Back

Net force.

Tags

NGSS.MS-PS2-2

Front

Which of the following is NOT a chemical change: Water Evaporating, Frying eggs, Photosynthesis, Digesting food?

Back

Water Evaporating.

Tags

NGSS.MS-PS1-2

Front

Define chemical change.

Back

A process where substances combine or break apart to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction.

Front

What is the formula for calculating net force?

Back

Net force = mass x acceleration.

Tags

NGSS.MS-PS2-2

Front

What happens to the mass of substances during a chemical reaction?

Back

The mass of the substances remains the same due to the law of conservation of mass.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5