Environmental Science Practice Unit 3 Chemistry Quiz

The basic unit, or building block, of matter is called

• an electron

• a nucleus

• a lego

• an atom

The atomic nucleus is made up of

• protons, neutrons, and electrons

• neutrons and electrons

• electrons and protons

• protons and neutrons

The positively charged particle found in the atomic nucleus is the

• electron

• proton

• neutron

• positron

The particle with no electric charge found in the atomic nucleus is the

• electron

• proton

• neutron

• positron

The negatively charged particle that moves in circular orbits around the nucleus is the

• electron

• proton

• neutron

• positron

The atomic particle that is transferred or shared when chemical bonds are formed is called the

• proton

• electron

• neutron

• nucleus

A chemical substance with a given set of properties that cannot be broken down into other substances is called

• a nucleus

• an element

• an acid

• a base

Why is water often called "the universal solvent"?

• It can dissolve many other molecules.

• Water is a type of solution.

• It solves most of the world's environmental problems.

In the ‘Building an Atom' simulation, you had to build ‘stable’ atoms. What factor affected whether or not the atom was stable?

• Ratio of protons to electrons.

• Ratio of protons to neutrons.

• Ratio of neutrons to electrons.

• Total number of protons, neutrons, and electrons.

In the 'Acid-Base Solutions' simulation, which of the following were the best conductors of electricity?

• Water

• weak acids and strong acids

• weak bases and strong bases

• strong acids and strong bases