The fundamental building block of all matter is:

• molecule
• cell
• atom
• proton

A compound is: 

• A substance that is composed of two or more elements that are chemically bonded.
• A molecule formed by atoms of the same element.
• another word for an atom.
• any substance that can be spit apart.

An element is made of one type of

• atom
• compound
• mixture
• molecule

Which of the following is Not a property of metals?

• malleability
• good electrical conductivity
• brittleness
• goo heat conductivity

Elements that are found in the same group/family have the same number of 

• neutrons
• valence electrons
• protons and neutrons
• protons

A period is

• another name for the periodic table.
• a vertical column of elements in the periodic table.
• a horizontal row of elements in the periodic table.
• a region of two or more columns in the periodic table.

An ionic bond is a bond that forms between

• atoms with neutral charges.
• one atom's nucleus and another atom's electrons. 
• ions with opposite charges.
• the electrons of two different atoms.

Alkali metals are extremely reactive because they

• are not solid at room temp.
• have very small atomic masses.
• have two valence electrons that form compounds with calcium and magnesium.
• have one valence electron that is easily removed to form a positive ion.

Most halogens form compounds by

• gaining an electron to form a negative ion.
• joining with both calcium and carbon.
• losing an electron to form a positive ion.
• losing protons.

Covalent bonds are formed between

• ions.
• compounds.
• nonmetals atoms.
• metal atoms.