The Periodic Table

The Periodic Table

Multiple Choice

What are the 3 particles that make up an atom?

• protons, neutrons, and isotopes

• neutrons, isotopes, and electrons

• positives, negatives, and electrons

• protons, neutrons, and electrons

Multiple Choice

Each column in the periodic table is called a

• period

• group

• cluster

• unit

Multiple Choice

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Multiple Choice

The atomic number of Carbon is 6. How many protons does Carbon have?

• 12

• 5

• 6

• 10

Multiple Choice

The order of elements in the periodic table is based on

• the number of protons in the nucleus.

• the electric charge of the nucleus.

• the number of neutrons in the nucleus.

• atomic mass.

Multiple Choice

How would O2 be classified.

• Atom

• Molecule

• Compound

Multiple Choice

What is an ion?

• a charged atom

• an atom with different neutrons

• atoms with no protons

• atoms with no electrons

Multiple Choice

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

Multiple Choice

Which of the following is a chemical formula?

• H₂SO₄

• Si

• Hg

• C

Multiple Choice

What is the total number of atoms in an ammonia (NH₃) molecule?

• 1
• 2
• 3
• 4