Chemistry Vocabulary

Mole

• the amount of substance in a certain volume of solution

• substance made by combining two or more different materials

•  a unit of measurement that is 6.02x10^23 units

• anything that takes up space and has mass

Atomic Mass/Atomic Number:

• Average of the atomic mass of all natural isotopes of an element

•  the sum of protons and neutrons of a single atom

• a pure substance made up of only one type of atom

• 6.02x10^23 units in one mole of any substance

Tags

NGSS.HS-PS1-7

Molecular Formula:

• the simplest ratio of different atoms in a compound

• the amount of substance in a certain volume of solution

•  atoms of the same element with same number of electrons but different number of neutrons

• a chemical formula for a compound that gives the total number of atoms of each element in a molecule

Empirical Formula:

•  the simplest ratio of different atoms in a compound

• a chemical formula for a compound that gives the total number of atoms of each element in a molecule

• tells you by mass what percent of each element is is a compound

• the amount of energy needed to remove an electron from an atom

Percent Composition:

• anything that takes up space and has mass

• tells you by mass what percent of each element is is a compound

•  the simplest ratio of different atoms in a compound

•  atoms of the same element with same number of electrons but different number of neutrons

Matter:

• the ability of a solute to dissolve in solvent and form a solution

• anything that takes up space and has mass

•  the amount of substance in a certain volume of solution

• the mass in grams of one mole of a substance

Tags

NGSS.MS-PS1-5

Density:

• a pure substance made up of only one type of atom

• a unit of measurement that is 6.02x10^23 units

•  the mass in grams of one mole of a substance

•  how tightly a material is packed together (mass/ volume)

Element:

• a single substance made of only one type of atom

•  mixture where components are not evenly mixed

• a pure substance made up of only one type of atom

• a mixture where the components are evenly mixed throughout

Solubility:

• the ability of a solute to dissolve in solvent and form a solution

•  atoms of the same element with same number of electrons but different number of neutrons

• tells you by mass what percent of each element is is a compound

• mixture where components are not evenly mixed

Isotope:

• a pure substance made up of only one type of atom

• 6.02x10^23 units in one mole of any substance

• atoms of the same element with same number of electrons but different number of neutrons

• the mass in grams of one mole of a substance

Tags

NGSS.HS-PS1-8