What is anything that has mass and takes up space?

These are the building blocks of matter.

Which of the following are located in the nucleus of an atom? (hint: there may be more than one answer)

Which of the following are located in the outer most shell of an atom and are available for bonding?

A(n) __________ is a pure substance that cannot be broken down into other substances by physical or chemical means.

Elements can be made up of one or more types of atoms.

Atomic number is the same as the number of

In a neutral atom, the number of protons will be the same as the number of

Atomic mass is equal to the

Atoms of the same element that have the same number of protons and electrons but differ in the number of neutrons are called __________________

Changing the number of neutrons in an atom will affect both the charge and its stability.

Isotopes that give off radiation are called

What isotope is used for determining the age of fossils?

A(n) ________________is a pure substance formed when two or more different elements combine.

Compounds are different than elements in that they can be broken down by chemical means.

Compounds are always formed from a specific combination of elements in a fixed ratio.

The force that holds two or more substances together is called a

Atoms become more stable by losing or attracting ________________ from other atoms.

An atom that has lost or gained one or more electrons is a(n)

A(n) __________ bond is an electrical attraction between two oppositely charged atoms.

The chemical bond that forms when electrons are shared is called a(n) __________________ bond.

In ionic bonds electrons are _________________ whereas in covalent bonds the electrons are ___________.

A(n) ______________________ is a compound in which the atoms are held together by a covalent bond.

An ion is to ________ bonding as a molecule is to ____________ bonding.

When Sodium (Na) forms an ionic bond with Fluorine (F), sodium loses an electron and transfers it to the fluorine. What overall charge does sodium now have?

If during bonding an atoms gains an electron it will become more __________________ charged.