Chapter 2: Chemistry

Question 0

The smallest unit of matter is what?

Answer 0

An atom

Question 1

Major elements in body that make up 96% of mass

Answer 1

Nitrogen Oxygen Carbon and hydrogen

Question 2

All living and nonliving things in the body that exists in 3 states

Answer 2

Matter

Question 3

How many chemical elements are normally present in the body ?

Answer 3

26

Question 4

Within nucleus these are positively charged

Answer 4

Protons

Question 5

What is an isotope?

Answer 5

Atoms of an element with same number of protons but different neutrons and therefore different mass number

Question 6

Unstable; their nuclei decay (spontaneously change) into a stable configuration is called what ?

Answer 6

Radioactive isotope

Question 7

An atom of a positive or negative charge because of unequal protons and electrons

Answer 7

Ion

Question 8

What is it called when two or more atoms share electrons?

Answer 8

Molecule

Question 9

What is a compound ?

Answer 9

Two or more different elements joined

Question 10

What will accelerate chemical bonds, by lowering activation energy ?

Answer 10

Catalyst

Question 11

How many electrons can the first four shells hold?

Answer 11

1st: 2
2nd: 8
3rd: 18
4th: 18

Question 12

Weak bonds between molecules

Answer 12

Hydrogen bonds

Question 13

Energy stored by matter do to its position

Answer 13

Potential energy

Question 14

Type of reaction that releases more energy then it absorbs

Answer 14

Exergonic reaction

Question 15

A + B -> AB is what kind of reaction ?

Answer 15

Synthesis reaction

Question 16

Compound that always contains carbon and hydrogen usually oxygen

Answer 16

Organic compound

Question 17

This type of synthesis occurs when two simple molecules join together eliminating a water in process

Answer 17

Dehydration synthesis

Question 18

True or false. The more hydrogen dissolved in a solution the more acidic it Is

Answer 18

True

Question 19

What is a neutral ph?

Answer 19

PH 7

Question 20

Anything that dissolves into cation and ion that isn’t H or OH is what ?

Answer 20

Salt

Question 21

Principle polysaccharide in the human body is what ?

Answer 21

Glycogen

Question 22

The polar head of the bicipital membrane is hydrophilic or hydrophobic ?

Answer 22

Hydrophilic “water loving”

Question 23

The tails in a bilipid membrane are polar or non polar ?

Answer 23

Nonpolar

Question 24

The building blocks of carbohydrate are the monomers ….

Answer 24

Monosaccharides

Question 25

Acts as a weak base and removes excess H

Answer 25

Bicarbonate ion

Question 26

Acts as a weak acid and adds H

Answer 26

Carbonic acid

Question 27

Is an acid a proton donor or acceptor ?

Answer 27

Proton donor

Question 28

True or false. A base is a Proton acceptor

Answer 28

True