chemistry 7th

Ionic bonds

A metal and a nonmetal

Covalent bond

Nonmetal and nonmetal

Isotopes

Atoms of the same element that have different amounts of neutrons

Cations

Atoms of the same element that are positively charged due to losing a neutron

Anions

Atoms of the same element that are negatively charged due to gaining an electron

Metals

Elements that is shiny and that conducts heat and electricity well

Nonmetals

An element that conducts heat and electricity poorly

Metalloid

Element that had properties of both metals and nonmetals

Conservation of mass

Mass cannot be created or destroyed

Mixture

Compositions of 2 or more substances that are not chemical combined

compound

A subtance made up of atoms of 2 or more different element joined by chemical bonds

Elements

A substance that cannot be separated or broken down into simpler substances

Endothermic

When energy is taken in and absorbed from surrounding often feels cold

Exothermic

When energy is released to surroundings often feels warm

A solute

The substance being dissolved into a solvent

A solvent

The substance in a solution that does the dissolving