Mid-term Exam Part 1

Front

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

Back

Net force

Front

Which element is a metalloid?

Back

Arsenic (As)

Front

Do all chemical reactions create new substances? (True/False)

Back

True

Front

Which of the following lists only COMPOUNDS: Co, NaCl, He; CO, NaCl, CH; Na, He, Cl; LiO, S, P?

Back

CO, NaCl, CH

Front

What is the force that always acts in a direction opposite to the motion of an object?

Back

Friction

Front

Define 'Net Force'.

Back

The overall force acting on an object when all the individual forces are combined.

Front

What is a metalloid?

Back

An element that has properties of both metals and nonmetals.

Front

What is a chemical reaction?

Back

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

Front

What are compounds?

Back

Substances formed when two or more elements are chemically bonded together.

Front

What is friction?

Back

A force that opposes the motion of an object.