Semester 1 Cumulative Science Exam

Front

Why do the noble gases not react with other elements?

Back

Their valence electrons are complete.

Front

What are formed when two or more atoms bond by sharing or transferring electrons?

Back

Molecules.

Front

What is Carbon Dioxide (CO2)?

Back

A compound.

Front

When you touch the metal leg of your chair, which way is the heat moving?

Back

Heat is moving from the hand to the chair leg by conduction.

Front

What causes molecules to slow down?

Back

Cooling them down.

Front

What are atoms?

Back

The basic building blocks of matter.

Front

What is a chemical bond?

Back

A force that holds atoms together in a molecule.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is conduction?

Back

The transfer of heat through direct contact.

Front

What is the state of matter that has a definite shape and volume?

Back

Solid.