Midterm

Question 1

in an atom, where are the protons and neutrons found?

Answer 1

nucleus

Question 2

what items are responsible for the mass of an atom?

Answer 2

protons and neutrons

Question 3

what is an isotope?

Answer 3

different number of neutrons than normal

Question 4

while liquid is boiling, what happens to the temperature

Answer 4

it stays the same

Question 5

what is the valence level?

Answer 5

the outermost energy

Question 6

what is an example of an exothermic reaction?

Answer 6

hand warmer

Question 7

give two examples of a heterogeneous mixture

Answer 7

soup, ice cream

Question 8

where is a reactant in the equation?

Answer 8

on the left side

Question 9

where is the product in the equation?

Answer 9

on the right side

Question 10

if Li and Br combine, what type of bond is formed?

Answer 10

ionic

Question 11

if Li and Br combine, what is their chemical formula?

Answer 11

LiBr

Question 12

3000cm= __m

Answer 12

3m

Question 13

2kg= __g

Answer 13

2000g

Question 14

the amount of matter in an object is called its

Answer 14

mass

Question 15

the amount of space an object occupies is called its

Answer 15

volume

Question 16

which phase of matter has the greatest amount of energy?

Answer 16

gas

Question 17

what is the law of conservation of mass?

Answer 17

the mass before a reaction equals the mass after a reaction in a closed system

Question 18

what is devon doing?

Answer 18

thinking about the taco bell saga

Question 19

did you watch the taco bell saga music video yet?

Answer 19

GO WATCH IT

Question 20

what is the best video trilogy on youtube?

Answer 20

the longboard rodeo tango

Question 21

what is the formula for density?

Answer 21

M/V

Question 22

what type of reaction is

2H2o –> 2H2+ O2

Answer 22

decomposition

Question 23

Al + PO4 –> AlPO4

Answer 23

synthesis

Question 24

Al2O3 + 2B –> Al + B2O3

Answer 24

single replacement