Test 1

Question 1

Actions of an electron

Answer 1

Share, gain, loose

Question 2

Bio ex for cohesion

Answer 2

Insects that walk on water

Question 3

Bio ex adhesion

Answer 3

Water on cell membrane

Question 4

Bio ex capillary

Answer 4

Blood vessel

Question 5

Most common elements in living organism

Answer 5

Carbon, hydrogen, oxygen, nitrogen

Question 6

Reactant and products( which is which)

Answer 6

Reactant(a+b) -> product (c)

Question 7

Chemical reaction- single displacement

Metals???

Answer 7

One of the elements switches with another( metals can’t be together)

Question 8

Double displacement

Who switches

Answer 8

Two partners switch

Metals

Question 9

Why does cohesion occur

Answer 9

Polarity

Question 10

How can you figure out how many covalent bonds an atom could make

Answer 10

Look at the # o electrons on the outer orbital and that’s the number
(Remember, they share)

Question 11

Atomic number

Answer 11

Number of protons

Question 12

Mass number

Answer 12

of protons and neutrons

Question 13

Atomic mass

Answer 13

of protons, neutrons and electrons

Question 14

Get as specific as possible with these numbers

30p, 29e, 37n

Answer 14

67 +
Zn
30
Isotope

Question 15

Difference between covalent and ionic bonding

Answer 15

Covalent-share

Ionic-gain, loose

Question 16

How are ants able to use formic acid

Answer 16

They create an in-biological chemical to save them from the acids destruction

Question 17

What are radioactive isotopes used for

Answer 17

Carbon dating, bonds, certain shots

Question 18

Trace elements

Answer 18

Boron, chromium, cobalt, copper, fluorine, iodine, iron, manganese, tin, zinc, silicon, selenium

Question 19

Difference between cations and anions

Answer 19

Cations-loose

Anions-gain

Question 20

Law of conservation

Answer 20

Matter can’t be destroyed or created