The basic unit of matter and the defining structure of elements.

• atom

• molecule

• element

• nucleus

Used to describe a molecule that has an unequal distribution of charges (positive and negative)

• non polar

• element

• polar

• chemicals

Tags

NGSS.HS-PS1-3

A weak bond formed by the attraction of more positively charged H on one molecule and the more negatively charged O (or N or F) on a different molecule.

• ionic

• covalent

• hydrogen

A strong bond created when atoms SHARE electrons.

• covalent

• ionic

• hydrogen

A strong bond created by the transfer of electrons from one atom to a different atom.

• covalent

• ionic

• hydrogen

Tags

NGSS.HS-PS1-2

What type of bond holds together the atoms within a water molecule? (indicated by arrow)

• hydrogen bond

• random bond

• ionic bond

• covalent bond

Tags

NGSS.MS-PS1-1

What type of bond is usually represented by dotted lines between water molecules?

• molecule

• hydrogen

• atom

• ionic

What pH would be considered neutral?

• 2

• 10

• 7

What property allows striders to walk on top of water?

• surface tension

• high specific heat

• solvent

• solid water floats

Which pH would be considered basic?

• 6

• 10

• 4