Atomic Structure and Periodic Table

What type of charge do protons have?

The atomic number is equal to:

• the number of protons in an atom

• the number of neutrons in an atom

• the number of electrons in an atom

• the atomic mass of an atom

Which element is in Group 13, Period 3?

• Aluminum (Al)

• Silicon (Si)

• Phosphorus (P)

• Sulfur (S)

Identify the element in Group 2, Period 2.

• Beryllium (Be)

• Magnesium (Mg)

• Calcium (Ca)

• Strontium (Sr)

Is Potassium (K) a metal or non-metal?

• Metal

• Non-metal

• Gas

• Liquid

What is the classification of Beryllium (Be)?

• Metal

• Non-Metal

What is the classification of Hydrogen (H)?

• Metal

• Non-Metal

What is the classification of Nitrogen (N)?

• Metal

• Non-Metal

What is a molecule?

• Two or more elements chemically combined.

• A single element in its pure form.

• A mixture of different substances.

• An atom with a positive charge.

Alkali metals are:

• a group of chemical elements in the periodic table with similar properties

• a type of rock found in the Earth's crust

• a category of organic compounds

• a class of synthetic polymers