Biology Chemicals of Life

A substances w/ a high concentration of OH- ions is called a

• base

• acid

• neutral

• enzyme

What is the smallest unit of matter

• molecule

• atom

• element

• cell

Tags

NGSS.MS-PS1-1

What is the smallest unit of a compound called

• atom

• molecule

• element

• ion

Tags

NGSS.MS-PS1-1

What is polarity?

• uneven distribution of electrons

• even distribution of electrons

• uneven distribution of protons

• even distribution of protons

A water drop is composed of water molecules that like to stick together. This is an example of ......

• cohesion

• chemical bond

• adhesion

• erosion

Fish swimming in a tank is an example of

• solvent

• solution

• suspension

• solute

Salt dissolved in water is an example of

• solvent

• solution

• solute

• suspension

When you put sugar into water the sugar is the

• solution

• solvent

• suspension

• solute

what is a buffer?

• causes it to become a hydroxide

• causes acidity

• neutralizes with a sudden change

• neutralizes without a sudden change

How is mass number calculated

• add protons and neutrons

• add protons and atomic number

• add protons plus electrons

• subtract protons from electrons