PS Module 18 L2 vocab

Match the word with its definition.

• ion

• a charged group of ions

• binary compound

• a compound composed of two elements

• polyatomic ion

• a positively or negatively charged particle

• polar molecule

• a molecule with partially charged areas

Match the following

• covalent bond

• force that holds atoms together in a compound

• chemical bond

• a chemical bond between oppositely charged ions

• ionic bond

• a bond formed from shared electrons

Tags

NGSS.HS-PS1-3

Match the following

• hydrate

• shows which elements are in a compound and their ratios

• chemical formula

• a crystalline substance that contains water

• molecule

• indicates how many electrons must be lost, gained or shared to achieve stability

• oxidation number

• a particle made of covalently bonded atoms

A nonpolar molecule has a slightly positive end and a slightly negative end.

• true

• false

A ​ ​ (a)   bond is a covalent bond in which electrons are shared equally by both atoms.

• nonpolar
• polar

A ​ (a)   bond is a covalent bond in which the electrons are not shared equally, resulting in a slightly positive end and a slightly negative end.

• polar
• nonpolar