Chapter 2 Chemical Level of Organization

Question 1

A positively charged subatomic particle is a?

Answer 1

Proton

Question 2

An uncharged subatomic particle is a?

Answer 2

Neutron

Question 3

A negatively charged subatomic particle is an?

Answer 3

Electron

Question 4

An atom that has a positive or negative charge due to an unequal # of protons and electrons is an?

Answer 4

Ion

Question 5

Two or more atoms chemically bonded together is a?

Answer 5

Molecule

Question 6

A substance that contains atoms of 2 or more different elements is a?

Answer 6

Compound

Question 7

When total number of protons exceeds the number of electrons, that atom has become a ?

Answer 7

Cation?

Question 8

When total number of electrons exceeds the number of protons, that atom has become a ?

Answer 8

Anion

Question 9

The force that holds together the atoms of a molecule is a?

Answer 9

Chemical bond

Question 10

Holds together ions with opposite charges

Answer 10

Ionic bond

Question 11

Forms when two atoms share electrons rather than gaining or losing them

Answer 11

Covalent bonds

Question 12

Forms when a hydrogen atom with a partial positive charge attracts the partial negative charge of a neighbouring electronegative atoms.

Answer 12

Hydrogen bonds

Question 13

The most common chemical bonds in the body, and the compounds that result from them form most of the body’s molecules

Answer 13

Covalent bonds

Question 14

A catalyst is a type of?

Answer 14

Compound

Question 15

This job (function)belongs to: they speed up chemical reactions by lowering activation energy, but do not become part of the product

Answer 15

A Catalyst

Question 16

The two types of compounds

Answer 16

Inorganic & organic

Question 17

Type of compound that us usually do not contain carbon and are structurally simple

Answer 17

Inorganic

Question 18

Type of compound that always contain carbon

Answer 18

Organic

Question 19

What is the separation of inorganic acids, bases,

& Salts into ions in a solution

Answer 19

Dissociation

Question 20

What dissociates in water and forms hydrogen ions?

Answer 20

An Acid

Question 21

What dissociates in water and forms hydroxide ions?

Answer 21

A base

Question 22

What dissociates in water and forms cations and anions,neither of which is Hydrogen ions or Hydroxide ions?

Answer 22

A salt

Question 23

The ph scale is based on the concentration of what in a solution?

Answer 23

Hydrogen ions

Question 24

Enzymes are almost always a type of?

Answer 24

Protein

Question 25

DNA has how many strands?

Answer 25

2

Question 26

RNA has how many strands?

Answer 26

1

Question 27

What are the 4 most common elements in the body?

Answer 27

Carbon, nitrogen, hydrogen, oxygen

Question 28

An atom that has gained or lost an electron is a?

Answer 28

Ion

Question 29

What is the energy molecule used in the body?

Answer 29

ATP

Question 30

What speeds up a chemical reaction?

Answer 30

An enzyme

Question 31

A compound that has pH of 5 is an?

Answer 31

Acid

Question 32

Th cookbook containing our genetic code is?

Answer 32

DNA

Question 33

The most common type of chemical bond in which atoms or molecules share electrons are?

Answer 33

Covalent bonds

Question 34

The compound that speeds up chemical reactions but does not become part of the product are?

Answer 34

Catalysts