Question

1) Which of the following is a chemical change? (1 point)

Boiling of water
Melting a cube of ice
Dissolving 10 grams of salt in water
Splitting water into hydrogen and oxygen***

2) What is the mass of water that results from combining 2.0g of hydrogen with 16.0g of oxygen? (1 point)
14.0g
16.0g
18.0g***
20.0g

3) Why are plastic building blocks good for modeling molecules? (1 point)
They come in thousands of shapes and sizes.
They can be combined in many different ways.***
They are rigid and do not easily separate.
There are as many different colors as there are atoms.

4. What did Antoine Lavoisier’s experiments demonstrate? (1 point)
Atoms always split into pairs during a chemical change.
Mass is neither lost nor gained during a chemical change.***
Matter can be created during a chemical change.
Energy is neither lost nor gained during a chemical change.

Answer 1

I agree with your answers.

Answer 2

what about #4?

Answer 3

Yes, Skylar, even question 4.

Answer 4

ok good cause I kind of geussed

Answer 5

Yay! I got 100% thanks for checking with me herp_derp :D

Answer 6

You should not guess all the time. Even a quick google search can verify your answer.

Answer 7

I only guessed on number 4 the rest I did on my own

Answer 8

They are all correct :)

Answer 9

wow i got 100% to thx guys

Answer 10

THANKYOU I was rely having trouble with number 3

Answer 11

D

C
B
B

Answer 12

Pacman is 100% correct! Thank you!!

Answer 13

Yes 100% Correct

1. D
2. C
3. B
4. B

Answer 14

d

c
b
b is correct got 100%

Answer 15

THX

100%

Answer 16

nbvmbv

Answer 17

I got 100/100 :) Thanks pacman

Answer 18

1. D

2. C
3. B
4. B

Answer 19

100%

Answer 20

Connexus students is 100%

1.D
2.C
3.B
4.B

Idk about khan academy

Answer 21

I totally needed help thank you soooo much That girl doesn't wanna work cause she's behind xo and Pacman and Herp_Derp. BTW, I love Pacman!!! Thank you!!!!

Answer 22

Connexus Student 100%

Thankyou everybody

Answer 23

Thx I love this

Answer 24

SMH, this puts a bad name on all 6th graders....

Answer 25

Thanks a bunch, really helped!

Answer 26

Got 100% THANKS

Answer 27

Thanks ^^

Answer 28

:D

Thanks~~

Answer 29

THX GUYS I GIT A 100% AND BOOSTED MY GRQDE UP FIR A C TO A. TYSM

Answer 30

1.D

2.C
3.B
4.B

Answer 31

why do people copy Skylar's answers no offence.

Answer 32

thanks

Answer 33

Thanx pacman and everyone else! 100%

Answer 34

1. D

2. C
3. B
4. B

Answer 35

That was not my questions

Answer 36

100%

Answer 37

thank you

Answer 38

still work DCBB 2020 100%

Answer 39

Got 100%

Answer 40

Yes! Thank you! I got all of my questions right! Thank you so much for these answers:

1.D
2.C
3.B
4.B

Answer 41

my answers are straight from the test 100%

1. D splitting water into hydrogen and oxygen
2. C 18.0g
3. B they can be combined in many different ways
4. B mass is neither lost nor gained during a chemical change

Answer 42

thanks :/

Answer 43

With the amount of likes and dislike how many people here like sushi?

Answer 44

I just took the test (idk why im doing school at 5am on a Saturday) and got a 100

Answer 45

uhhh idk what I put here. ＼(ﾟｰﾟ＼)

Answer 46

1. D

2. C
3. B
4. B
100% for Connexus

Answer 47

I have 15