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5/8: Energy and Enthalpy

Last updated over 2 years ago

43 questions

Required

1 point

1

Question 1

1.

Required

1 point

1

Question 2

2.

reactant

product

Required

1 point

1

Question 3

3.

endothermic

exothermic

Required

1 point

1

Question 4

4.

positive

negative

Required

1 point

1

Question 5

5.

bond breaking 

bond transformation

bond making

bond synergy

Required

1 point

1

Question 6

6.

endothermic

exothermic

Required

1 point

1

Question 7

7.

endothermic

exothermic

Required

1 point

1

Question 8

8.

energy is first gained and eventually lost

energy is never gained, but it can be lost

energy can be gained, but not lost

energy is never gained or lost it just changes forms

Required

1 point

1

Question 9

9.

exothermic

endothermic

Required

1 point

1

Question 10

10.

exothermic

endothermic

Required

1 point

1

Question 11

11.

exothermic

endothermic

Required

1 point

1

Question 12

12.

exothermic

endothermic

Required

1 point

1

Question 13

13.

burning violates this law because energy is lost as heat

the energy held in the chemical bonds of paper is changed into the energy of heat

it violated the law because there was no ice for that burn

the energy held in the chemical bonds of paper is greater than that lost as heat

the energy held in the chemical bonds of paper is less than that lost as heat

Required

1 point

1

Question 14

14.

positive

negative

Required

1 point

1

Question 15

15.

positive

negative

Required

1 point

1

Question 16

16.

potential energy

kinetic energy

Required

1 point

1

Question 17

17.

potential energy

kinetic energy

Required

1 point

1

Question 18

18.

positive

negative

neutral

Required

1 point

1

Question 19

19.

positive

negative

neutral

Required

1 point

1

Question 20

20.

positive

negative

neutral

Required

1 point

1

Question 21

21.

1

0

-1

Required

1 point

1

Question 22

22.

1

0

-1

Required

1 point

1

Question 23

23.

1

0

-1

Required

1 point

1

Question 24

24.

nucleus

orbitals

both nucleus and the orbitals

Required

1 point

1

Question 25

25.

nucleus

orbitals

both nucleus and the orbitals

Required

1 point

1

Question 26

26.

nucleus

orbitals

both nucleus and the orbitals

Required

1 point

1

Question 27

27.

nucleus

orbitals

both nucleus and the orbitals

Required

1 point

1

Question 28

28.

nucleus

orbitals

both nucleus and the orbitals

Required

1 point

1

Question 29

29.

number of neutrons

number of electrons

number of electrons plus protons

number of protons

number of electrons plus neutrons

number of neutrons plus protons

Required

1 point

1

Question 30

30.

number of neutrons

number of electrons

number of electrons plus protons

number of protons

number of electrons plus neutrons

number of neutrons plus protons

Required

1 point

1

Question 31

31.

2

4

6

8

Required

1 point

1

Question 32

32.

H

Li

He

C

N

O

Ca

Required

1 point

1

Question 33

33.

outermost orbital

innermost orbital

an average between orbitals 2 and 4

both innermost and outermost orbitals

Required

1 point

1

Question 34

34.

16 - oxygen

8 - nitrogen

8 - oxygen

16 - nitrogen

8 - carbon

16 - carbon

Required

1 point

1

Question 35

35.

same number of neutrons, but different number of electrons

same number of neutrons, but different number of protons

same number of protons, but different number of neutrons

same number of electrons, but different number of protons

same number of electrons, but different number of neutrons

Required

1 point

1

Question 36

36.

2

4

6

8

10

Required

1 point

1

Question 37

37.

different number of neutrons and protons

different number of protons and electrons

different number of electrons and neutrons

Required

1 point

1

Question 38

38.

cation - more protons than electrons

anion - more protons than electrons

cation - more electrons than protons

anion - more electrons than protons

Required

1 point

1

Question 39

39.

26.1

27.1

28.1

29.1

30.1

Required

1 point

1

Question 40

40.

when the number of electrons is greater than the number of protons

when the number of protons is greater than the number of electrons

when it absorbs energy 

when it gives off energy 

Required

1 point

1

Question 41

41.

it gives off energy in the form of light

it absorbs energy in the form of light

a alpha particle is released

a beta particle is released

a gamma ray is released

Required

1 point

1

Question 42

42.

every atom in a period has the same emission spectrum

every atom in a group has the same emission spectrum

every atoms has its' own unique emission spectrum

Required

1 point

1

Question 43

43.

the time it takes for half of an atoms protons to be converted into neutrons

the time it takes for half of an atoms neutrons to be converted into protons

the time it takes for half of a radioactive substance to decay

the time it takes for half of an atoms electrons to be converted into neutrons