Intro to Chemistry Test Review

Front

What is the smallest unit of an element that still has the properties of that element?

Back

An atom.

Front

Which group of elements is known to be inert?

Back

Noble Gas.

Front

What are the three particles that make up an atom?

Back

Protons, neutrons, and electrons.

Front

What does the atomic number represent?

Back

The number of protons in the nucleus of the atom.

Front

Which class of elements are malleable, ductile, shiny, good conductors of heat and electricity, and react with acids to form hydrogen gas?

Back

Metals.

Front

What is a substance made of two or more different elements that are chemically bonded?

Back

A compound.

Front

What is the term for a mixture that has a uniform composition throughout?

Back

A homogeneous mixture.

Front

What is the term for a substance that cannot be broken down into simpler substances by chemical means?

Back

An element.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.