Chemistry of Life Biochemistry

Multiple Choice

What are the vertical columns on the periodic called?

• groups

• periods

• nonmetals

• metals

• metalloids

Multiple Choice

What are the horizontal rows on the periodic table called?

• periods

• groups

• metals

• nonmetals

• metalloids

Multiple Select

What does the number of proton tell us?

• electrons

• atomic number

• atomic mass

• neutrons

Multiple Choice

How do you calculate the number of neutrons? *

• Mass = Atomic number - Neutrons

• Mass - Atomic number = Neutrons

• Atomic number = Neutrons

Multiple Choice

The chemical compound of water is

• HO
• H₂O
• H₃O
• HO₂

Multiple Choice

What is water made of?

• Water
• Liquid
• Hydrogen and oxygen
• Blue 

Multiple Choice

molecule in which opposite ends have opposite electric charges

• cohesion
• polar molecule
• hydrogen bond
• solution

Multiple Choice

Refer to the picture of water sticking to a leaf; this is occurring because of:

• Adhesion

• Cohesion

Multiple Choice

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Multiple Choice

tendency of molecules of the same kind to stick to one another

• cohesion
• adhesion
• solution
• polar molecule

Multiple Choice

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Multiple Choice

Why does water move from the roots to the leaves of plants through the plants' tiny tubes?

• specific heat 
• capillary action

• atoms

• density

Multiple Choice

The property where water can pull itself up tubes or through spaces in paper or fabrics.

• adhesion
• capillary action
• cohesion
• universal solvent

Multiple Choice

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Multiple Choice

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

Multiple Choice

A solvent is...

• substance into which the solute dissolves
• a compound being dissolved
• a substance that does not dissolve
• None of the above