In class quiz 2

Question 1

What is a group of the same atoms called?

Answer 1

element

Question 2

Some atoms have more neutrons than what the atomic number says

Answer 2

true

Question 3

Isotope example

Answer 3

c13= 6 p + 7n

Question 4

carbon-14 cannot hold on to all 8 neutrons in the nucleus

Answer 4

Carbon will kick off a neutron making c14 radioactive

Question 5

How many electrons does an atom have in the first orbit around the nucleus?

Answer 5

2

Question 6

How many electrons does an atom have in the second orbit around the nucleus?

Answer 6

a maximum of 8

Question 7

The electrons in the outermost orbit have the most energy and are called ?

Answer 7

Valence electrons, these are used to make chemical bonds.

Question 8

An atom with a charge is called a ?

Answer 8

Ion

Question 9

cation

Answer 9

positive charge

Question 10

anion

Answer 10

negative charge

Question 11

+/- bond

Answer 11

ionic bond

Question 12

weakest to strongest chemical bond

Answer 12

hydrogen, ionic, single covalent, double covalent, and triple covalent.

Question 13

solid

Answer 13

saturated

Question 14

liquid

Answer 14

unsaturated

Question 15

bonds that share electrons between two or more elements

Answer 15

covalent

Question 16

water is a polar covalent bond

Answer 16

true

Question 17

between two water molecules there is a hydrogen bond

Answer 17

true

Question 18

there are polar covalent bonds within a water molecule

Answer 18

true

Question 19

when water breaks down, it causes charges

Answer 19

true

Question 20

characteristics of water

Answer 20

cooling agent, good solvent ( dissolves like substances), water has cohesion and adhesion, hard to change the temperature of water, and can form ice.

Question 21

cohesion

Answer 21

the ability of water molecules to stick together

Question 22

adhesion

Answer 22

molecules are sticking to a surface

Question 23

hydrogen bonds spread out and become less dense which allows ice to float

Answer 23

true

Question 24

hot water pushes hydrogen bonds further away from each other allowing it to freeze more easily

Answer 24

true