Physical Science Final Exam Review I

The region around the nucleus occupied by the electrons is called the negative zone.

• True

• False

Horizontal rows of the periodic table are called .

• clusters

• periods
• groups

• families

Oxygen’s atomic number is 8. This means that an oxygen atom has

• eight protons in its nucleus.

• a total of eight protons and neutrons.

• eight neutrons in its nucleus.

• a total of eight neutrons and electrons.

Which statement about the atomic nucleus is correct?

• The nucleus is made of electrons and has a positive charge.

• The nucleus is made of protons and neutrons and has a positive charge.

• The nucleus is made of protons and neutrons and has a negative charge.

• The nucleus is made of electrons and has a negative charge.

Elements that lie along the stair-step line of the periodic table are .

• liquids

• metals

• metalloids
• radioactive

If heat must be added to a chemical reaction for the reaction to take place, the reaction is .

• balanced

• endothermic
• exothermic

• reactant

Which of the following elements is an alkali metal?

• mercury

• magnesium

• sodium

• calcium

According to modern atomic theory, it is nearly impossible to determine an electron’s exact

• color.

• size.

• position.

• charge.

The noble gases are in .

• Group 18
• Group 1

• Group 13

• Group 2

Each substance on the left side of the arrow in a chemical equation is a ____.

• reactant

• coefficient

• product

• catalyst