biochem quiz #1 review

Phenolphthalein turns pink to indicate what is present?

• acid

• base

• oxygen

• water

Which term describes a mixture that is unevenly mixed?

• homogeneous

• heterogeneous

• solution

• solute

A substance with a pH of 2 is classified as

• acid

• base

• neutral

• indicator

Two or more different elements chemically combined form

• an element

• an acid

• an atom

• a compound

Tags

NGSS.MS-PS1-1

In a salt water solution, the salt would be the

• solute

• solvent

• acid

• base

Atoms with the same number of protons, but a different number of neutrons, such as C-12 and C-14 are called

• ions

• elements

• compounds

• isotopes

Tags

NGSS.HS-PS1-8

A charged atom with an unequal number of protons and electrons, such as Na+, is called

• an isotope

• an ion

• an element

• a compound

What does the atomic mass number represent?

• protons

• neutrons

• protons + neutrons

• protons + electrons

Tags

NGSS.HS-PS1-8

What does the atomic number represent?

• protons

• neutrons

• protons + neutrons

• protons + electrons

Which subatomic particle is located outside the nucleus?

• protons

• neutrons

• electrons

• ions