Question

?

Answer 1

D

Answer 2

good

Answer 3

(you can keep this open, I just wanted to close the other q so the other user didn't get spammed with notifications)

Answer 4

Oh okay

Answer 5

D

Answer 6

well done

Answer 7

B

Answer 8

not quite, an electron has a ~much~ smaller mass than the proton

any other guesses?

Answer 9

A

Answer 10

awesome

Answer 11

which compound involves a metal bonded to a nonmetal?

Answer 12

D

Answer 13

well done

Answer 14

as a hint, the # of valence electrons is related to the group # (except for transition metals and the lanthanides/actinides)

so you should be looking for the element closest to the left end of the ptable

Answer 15

D

Answer 16

good

Answer 17

B

Answer 18

density is m/v, it's not a force

as a hint which physical property has the equation F/A?

Answer 19

D

Answer 20

awesome

Answer 21

D

Answer 22

good

Answer 23

D

Answer 24

good

Answer 25

not sure about htis

Answer 26

you're given the equation F1/A1 = F2/A2, where F1 and A1 are the force and area for the first piston, F2 and A2 are the force and area for the second piston, just need to plug in the values from the question and solve for F2

Answer 27

C

Answer 28

good

Answer 29

D

Answer 30

bien joué (good job!)

Answer 31

A

Answer 32

good

Answer 33

Either b or d a little confused

Answer 34

since P = F/A and the force is the same for both scenarios (mg), should we increase or decrease area to make the pressure bigger?

Answer 35

increase

Answer 36

actuaaly uggg

Answer 37

notice that A is in the denominator, so if we increase A the denominator gets bigger, making the entire fraction smaller

Answer 38

so we would decrease the area (D)

Answer 39

yeah so decrease

Answer 40

yeah so decrease

Answer 41

D

Answer 42

if a molecule is asymmetric it's polar so D wouldn't work, any other guesses?

Answer 43

b

Answer 44

good, B

Answer 45

C

Answer 46

good

Answer 47

A

Answer 48

other way around, the solute is the thing that gets dissolved, the solvent does the dissolving so C

Answer 49

D

Answer 50

good

Answer 51

B

Answer 52

B

Answer 53

good

Answer 54

Ugh a or c

Answer 55

as a hint metals would be more likely to be conductors and nonmetals would be more likely to be insulators

Answer 56

B

Answer 57

calcium is a group II element so it's an alkali earth metal, there's a better answer out there that's a nonmetal

Answer 58

sulfur

Answer 59

awesome, that's it

Answer 60

D

Answer 61

technically true but there's a better answer out there - first figure out what type of element (metal vs nonmetal) carbon and chlorine are, determine the appropriate type of bond (ionic vs covalent) and then the electron behavior

Answer 62

C

Answer 63

Ugh im a little confused on this one

Answer 64

c is correct, since carbon and chlorine are nonmetals they bond covalently

Answer 65

B

Answer 66

it's asking for the ~current~ model, the plum-pudding model got disproved a while ago

any other ideas?

Answer 67

oh so c

Answer 68

yes

Answer 69

A

Answer 70

awesome

Answer 71

A

Answer 72

not quite, the key word here is "narrow" when in reality water has a high specific heat so it stays liquid over a ~wide~ variety

any other ideas?

Answer 73

D

Answer 74

water has as high specific heat, that means it needs to absorb a lot of energy to raise its temp not a little energy

Answer 75

S um c

Answer 76

so*

Answer 77

ugh i dont want to guess

Answer 78

good, C

Answer 79

would recommend writing down those ideas about specific heat, they're important to know

Answer 80

Willd o