Chemistry of Life Review

Which of the subatomic particles are found in orbitals that surround the nucleus?

• protons

• neutrons

• electrons

• isotopes

The yellow particles represented here are the:

• neutrons

• electrons

• protons

• nucleus

Tags

NGSS.MS-PS1-1

Formed when electrons are shared between atoms:

• polar bond

• ionic bond

• hydrogen bond

• covalent bond

Tags

NGSS.MS-PS1-1

When an atom gains or loses an electron, it becomes a charged particle called a/an:

• ion

• polar molecule

• positive atom

• negative atom

Which property allows water molecules to "stick" to themselves?

• adhesion

• cohesion

• polarity

• surface tension

Water has a high____, meaning it takes a great deal of energy to raise the temperature of water.

• surface tension

• polarity

• solubility

• heat capacity

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Molecules (like water) that have an uneven distribution of charges are known as _____.

• polar

• ions

• solvents

• non-polar

Tags

NGSS.MS-PS1-1

Water is known as a universal biological solvent because...

• it is non-polar and cannot dissolve ions.

• it is cohesive and can form droplets.

• it is polar and can dissolve both negative and positive ions.

• it dissolves every substance on Earth.

Which of the following is TRUE about acids and bases?

• The pH scale ranges from 0-14, with acids ranging from 0-7 and bases ranging from 7-14.

• Acids produce more H+ ions in water.

• Bases produce more OH- ions in water.

• All of the above are true!

Solutions that prevent a drastic change in pH are called:

• buffers

• solutes

• suspensions

• acids