Unit 1 "Practice Quizzes Questions"

Using a Periodic Table:

Identify the element by choosing its symbol and name after looking at the elemental model:

• Symbol: He

• Symbol: Be

• Name: Helium

• Name: Beryllium

Using a Periodic Table:

Identify the element by choosing its symbol and name after looking at the elemental model:

• Symbol: Na

• Symbol: Bo

• Name: Boron

• Name: Sodium

Which of the following statements is true?

• The number of protons in an element is always equal to the number of neutrons

• Solids have a fixed shape, volume, and mass.

• Dalton believed atoms were made mostly of empty space.

• Plasmas have a net negative charge.

True or False:

All phases of matter may have a fixed (definite) mass.

• True

• False

Which phase(s) of matter has/have a variable volume?

• Gas and Plasma

• Solids only

• Liquid only

• Liquid and Gas

True or False:

Gas molecules are attached to oen another weekly.

• True

• False

Using the Periodic Table, complete the sentence:

The mass of Oxygen is _ .

• 8.00

• 10.00

• 12.00

• 16.00

Using the Periodic Table, complete the sentence:

The atomic number of Gold is _ .

• 31

• 79

• 32

• 47

Using the Periodic Table:

What do the following gases have in common? Ne, Ar, Kr, and Xe.

• All have the same atomic number

• All have the same number of electron shells

• All have 8 electrons in their outer orbit.

• All have the same atmoic weight.

Complete the sentence:

Henri Becquerel is credited with the discovery of _.

• Uranium atoms

• Photographic film

• Radioactivity

• Radium