WATER AND SOLUTIONS

A mixture has a uniform composition it is called a

• solute

• solution

• solvent

• mixture

A combination of two or more substances in which each substance retains its individual characteristics and properties

• mixture

• solution

• solvent

• solute

The measure of concentration of H+ ions in a solution

• buffer

• base

• alkaline

• pH

Mixtures that react with acids and bases to keep the pH within a particular range

• acids

• bases

• buffer

• pH

The substance in which another is dissolved

• solvent

• solute

• solution

• mixture

Molecules that have unequal distribution of charges

• hydrogen bonds

• polar molecules

• solvent

• solution

What does the image show ?

• a heterogenous mixture

• a homogenous mixture

• a solution

• a suspension

Which statement is NOT true about pure water ?

• It has a pH of 7,0

• It is composed of polar molecules

• It is composed of ionic bonds

• It is a good solvent

Tags

NGSS.MS-PS1-1

Which is a substance that produces OH- ions when dissolved in water ?

• a base

• an acid

• a buffer

• salt

Select why are hydrogen bonds important for living organisms.

• they allow for formation of proteins

• they allow for particles to interact

• they allow for covalent bonds

• they allow for acids to form

Tags

NGSS.HS-LS1-6