Terms and Definitions: Chemistry

Question 1

Chemistry Definitions and Terms

everything is composed of atoms = basic building blocks of life.

Answer 1

Term

Atoms

Question 2

Chemistry Definitions and Terms

a substance made up of only one kind of atom

(simplest chemical substances)

Answer 2

Term

Element

Question 3

Chemistry Definitions and Terms

consists of two or more atoms linked by a chemical bond

Answer 3

Term

Molecule

Question 4

Chemistry Definitions and Terms

a substance whose molecules contain more than one type of atom

Answer 4

Term

Compound

Question 5

Chemistry Definitions and Terms

Atoms with a positive or negative charge (+/-)

Answer 5

Term

Ions

Question 6

Chemistry Definitions and Terms

positively charged ions

(when the number of protons exceeds the number of electrons)

Answer 6

Term

Cations

Question 7

Chemistry Definitions and Terms

negatively charged ions

(when the number of electrons exceeds the number of protons)

Answer 7

Term

Anions

Question 8

Chemistry Definitions and Terms

substance that when dissolved in water splits into ions and can conduct an electric current

Answer 8

Term

Electrolyte

Question 9

Chemistry Definitions and Terms

an electrolyte used in the body, its ions being Na+ and Cl-

• Chemical symbols and names

Answer 9

Term

NaCl

Sodium Chloride

Question 10

Atom and Symbol

Calcium

Answer 10

Ca

Question 11

Atom and Symbol

Carbon

Answer 11

C

Question 12

Atom and Symbol

Chlorine

Answer 12

Cl

Question 13

Atom and Symbol

Copper

Answer 13

Cu

Question 14

Atom and Symbol

Iodine

Answer 14

I

Question 15

Atom and Symbol

Hydrogen

Answer 15

H

Question 16

Atom and Symbol

Iron

Answer 16

Fe

Question 17

Atom and Symbol

Magnesium

Answer 17

Mg

Question 18

Atom and Symbol

Nitrogen

Answer 18

N

Question 19

Atom and Symbol

Oxygen

Answer 19

O

Question 20

Atom and Symbol

Phosporus

Answer 20

P

Question 21

Atom and Symbol

Potassium

Answer 21

K

Question 22

Atom and Symbol

Sodium

Answer 22

Na

Question 23

Atom and Symbol

Sulphur

Answer 23

S

Question 24

Atom and Symbol

Zinc

Answer 24

Zn

Question 25

Compound and Symbol ## Footnote **Calcium carbonate**

Answer 25

CaCO₃

Question 26

Compound and Symbol ## Footnote **Carbon Dioxide**

Answer 26

CO₂

Question 27

Compound and Symbol ## Footnote **Cooper sulfate**

Answer 27

CuSO₄

Question 28

Compound and Symbol ## Footnote **Glucose**

Answer 28

C₆H₁₂O₆

Question 29

Compound and Symbol ## Footnote **Hydrochloric acid**

Answer 29

HCI

Question 30

Compound and Symbol **Sodium bicarbonate** (baking soda)

Answer 30

NaHCO₃

Question 31

Compound and Symbol **Sodium chloride** (table salt)

Answer 31

NaCI

Question 32

Compound and Symbol ## Footnote **Sodium Hydroxode**

Answer 32

NaOH

Question 33

Compound and Symbol **Water**

Answer 33

H₂O

Question 34

1. Na⁺ 2. K⁺ 3. Ca⁺ 4. Mg²⁺

Answer 34

1. sodium 2. potassium 3. calcium 4. magnesium

Question 35

1. Cl^- 2. P0₄- 3. HC0₃-

Answer 35

1. chloride 2. phosphate 3. bicarbonate

Question 36

Inorganic m\_\_\_\_\_\_\_\_ help keep the acid/base (pH) and concentration of the blood and other bodily fluids stable.

Answer 36

molecules

Question 37

Compounds that accept hydrogen ions are called b\_\_\_\_ or a\_\_\_\_\_

Answer 37

bases alkalis

Question 38

Acidity is expressed as ___ which is the measure of the hydrogen ion concentration.

Answer 38

pH

Question 39

All organic compounds contain **c\_\_\_\_\_ atoms**. They are larger and more complex than inroganic compounds

Answer 39

carbon

Question 40

Other main *elements* are **h\_\_\_\_\_\_ and o\_\_\_\_\_\_, sometimes n\_\_\_\_\_\_**

Answer 40

hydrogen oxygen nitrogen

Question 41

The main organic compounds found in the body are: * **c\_\_\_\_\_\_\_\_** * **p\_\_\_\_\_\_\_** * **f\_\_\_\_\_**

Answer 41

carbohydrates proteins fats