8th Grade Science Semester Exam Review

Front

What is the atomic mass of Boron?

Back

10.81

Front

What should a student do FIRST after breaking a beaker?

Back

Tell the teacher about the accident.

Front

What is the velocity of a car traveling 270 miles in 4 hours?

Back

67.5 mi/hr south

Front

What is an example of a new substance formed by a chemical reaction?

Back

Milk souring.

Front

Where are structures A and B located in an atom?

Back

Nucleus.

Front

What is the definition of velocity?

Back

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

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to 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.

Front

What is the valence shell?

Back

The outermost shell of an atom that contains the valence electrons.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.