Cannot be broken down into another substance by a chemical reaction

2 or more elements combined in a fixed ratio

Smallest unit of matter that still retains the properties of an element

Positive charge, found in nucleus, 1 amu (dalton)

Negative charge, found in orbit around the nucleus, mass is negligible

No charge, found in nucleus, 1 amu (dalton)

Atomic Number

Atomic Mass

Same number of Protons, but different number of neutrons

___________ electrons are in the outermost shell and participate in bonding

In a(n) ______________ bond, electrons are shared

In a(n) ______________ bond, electrons are transferred

In a(n) ______________ bond, the slightly positive region of a molecule is attracted to the slightly negative region of another molecule or in another region of the same molecule

In a ___________________ covalent bond, two pairs of electrons are shared

In a ___________________ covalent bond, one pair of electrons is shared

In a ___________________ covalent bond, electrons are equally shared

In a ___________________ covalent bond, electrons are not shared equally

The starting materials in a chemical reaction are known as

The materials resulting from a chemical reaction are known as

When forward and reverse chemical reactions occur at the same rate, so the relative concentrations of reactants and products don't change, the reaction has reached _________________.

Carbon 12 has an atomic number of 6 and an atomic mass of 12. How many protons does Carbon 12 have?

Carbon 14 has an atomic number of 6 and an atomic mass of 14. How many neutrons does Carbon 14 have?

Carbon 14 has an atomic number of 6 and an atomic mass of 14. How many electrons does Carbon 14 have?

Carbon (atomic number of 6) has 2 electrons in its first energy level and four electrons in its second energy level. How many covalent bonds can carbon make?

Oxygen (atomic number 8) has 2 electrons in its first energy level and 6 electrons in its second energy level. How many covalent bonds can oxygen make?

How many valence electrons does Nitrogen have? Hint: atomic # is 7

Neon has an atomic number of 10. How many covalent bonds will Neon make?

Fluorine (atomic number 9) has 2 electrons in its first energy level and 7 electrons in its second energy level. What type of chemical bond will Fluorine make?

An atom that gains or loses electrons is called a(n)

When an atom gains an electron, it becomes a

When an atom loses an electron, it becomes a:

A positively charged ion is known as a(n) ______________

A negatively charged ion is known as a(n) ______________

Hydrogen (atomic number 1) has one electron in its first energy level. How many covalent bonds can hydrogen make?