Atom that has a positive or negative charge

• ion
• atom
• element
• proton

Compound that forms H+ ions in solution / pH less than 7

• acid
• base
• suspension
• nucleus

Attraction between molecule of the same substance

• adhesion
• cohesion
• hydrogen bonding
• Van der Waals forces

One of several forms of an element that has the same number of protons but different number of neutrons

• ion
• element
• isotope
• buffer

Material composed of 2 or more substances that are physically mixed but not chemically combined

• compound
• solution
• suspension
• mixture

Smallest unit of a compound that displays the properties of the compound

• atom
• molecule
• covalent bond
• ionic bond

Tags

NGSS.MS-PS1-1

Negatively charged particle

• proton
• neutron
• electron

Tags

NGSS.MS-PS2-3

A pure substance that consists of only 1 type of atom

• element

• compound

• molecule

• ion

Substance that is dissolved in a solution

• solute
• solvent
• solution
• salt

The center of the atom where you find protons and neutrons

• neutron
• isotope
• nucleus
• element