Chemistry - Exam

Question 2

Chemical reaction

Answer 2

when bonds between atoms, ions or molecules are formed or broken

Question 3

substance in which other substances dissolve

Answer 3

Solvent

Question 4

substance dissolved in liquid like water

Answer 4

solute

Question 5

Acid

Answer 5

electrolytes that release H ions in water: H+

Question 6

Base

Answer 6

electrolytes that release ions that combine with H in water (OH- is example)

Question 7

concentration of hydrogen ions in a solution

Answer 7

pH

Question 8

person’s pH drops below 7.35

Answer 8

Acidosis

Question 9

person’s pH rises above 7.45

Answer 9

Alkalosis

Question 10

4 types of inorganic chemicals in body

Answer 10

Water, oxygen, CO2, salts

Question 11

Salts ____ and become ____

Answer 11

dissociate; ions

Question 12

what are organic chemicals?

Answer 12

have carbon and hydrogen, most nonelectrolytes

Question 13

4 major organic compounds in body

Answer 13

1. Carbohydrates
2. Lipids
3. Proteins
4. Nucleic acids

Question 14

What elements are proteins made of?

Answer 14

C, O H and N (also sometimes S)

Question 15

What characterizes an animo acid?

Answer 15

It’s R group (side chain)

Question 16

What do nucleic acids do?

Answer 16

Form genes and participate in protein synthesis, control cell activities