Unit 1Review

What are the two structures found in the atom's nucleus?

• Electrons and Neutrons
• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons

What does the atomic number tell you?

• Number of Protons
• Number of Neutrons
• Sum of protons and neutrons

The neutron has a ________________ charge.

• negative

• neutral

• positive

• low

What are valence electrons?

• Any of an atom's electrons

• Electrons located on the first energy level

• Electrons not attached to any atom

• electrons located on the outer energy level

What category is silicon (Si) a part of?

• Metal

• Nonmetal

• Metalloid

• Halogens

What is the ionic charge of Phosphorus (P)?

• +5

• -3

• +3

• -5

What is group name of the most reactive metals?

• Noble gases

• Halogens

• Alkali metals

• Alkaline earth metals

Why are halogens so reactive?

• They want to get rid of their only valance electron

• They only need one more electron

• They are non reactive, they have a full shell

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

If an atom had the same properties as fluorine (F), it would probably be located in

• period 1.
• period 2.
• group 2.
• group 17.