intro to chemistry

Question 1

Nucleus

Answer 1

Positive charge

Question 2

Electrons

Answer 2

Negative charge

Question 3

Symbol for atom: oxygen

Answer 3

O

Question 4

Symbol for atom: carbon

Answer 4

C

Question 5

Symbol for atom: hydrogen

Answer 5

H

Question 6

Symbol for atom: Nitrogen

Answer 6

N

Question 7

Symbol for atom: Calcium

Answer 7

Ca

Question 8

Symbol for atom: Phosphorus

Answer 8

P

Question 9

Symbol for atom: Potassium

Answer 9

K

Question 10

Symbol for Ion: Hydrogen

Answer 10

H+

Question 11

Symbol for Ion:Sodium

Answer 11

Na+

Question 12

Symbol for Ion: Potassium

Answer 12

K+

Question 13

Symbol for Ion: Chloride

Answer 13

Cl-

Question 14

Symbol for Ion: Calcium

Answer 14

Ca2+

Question 15

Negative Ion known as

Answer 15

anion

Question 16

Positive Ion known as

Answer 16

cation

Question 17

Hydorgen bonds

Answer 17

weak attractions that are broken easily. DNA or larger molecules have many hydrogen bonds in which they are used to stabilise structures

Question 18

Kinetic Energy

Answer 18

energy that an atom PRODUCES FROM Vibrations

Question 19

Solutions

Answer 19

are a type of mixture that contains a solvent and solute

Question 20

Solvent

Answer 20

dissolving medium (water)

Question 21

Solute

Answer 21

substance disolved ( sugar)

Question 22

Hydrophilic

Answer 22

water loving substance

Question 23

Hydrophilic

Answer 23

water fearing