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which of the following is a chemical change?

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.

  1. 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. 12 0 2,314
    asked by Skylar
    Jan 28, 2015
    Please help 🙁 0 0
    posted by Skylar
    Jan 28, 2015
    I agree with your answers. 5 0
    posted by herp_derp
    Jan 28, 2015
    what about #4? 1 0
    posted by Skylar
    Jan 28, 2015
    Yes, Skylar, even question 4. 2 0
    posted by herp_derp
    Jan 28, 2015

ok good cause I kind of geussed

0 0
posted by Skylar
Jan 28, 2015
Yay! I got 100% thanks for checking with me herp_derp 😀

0 0
posted by Skylar
Jan 28, 2015
You should not guess all the time. Even a quick google search can verify your answer.

0 0
posted by herp_derp
Jan 28, 2015
I only guessed on number 4 the rest I did on my own

0 0
posted by Skylar
Jan 28, 2015
They are all correct 🙂

3 0
posted by Anonymous
Feb 20, 2015

wow i got 100% to thx guys

2 0
posted by k.c undercover
Feb 3, 2016
THANKYOU I was rely having trouble with number 3

0 0
posted by Sky Serine
Feb 17, 2016
D
C
B
B

23 0
posted by Pacman
Feb 22, 2016
Pacman is 100% correct! Thank you!!

8 0
posted by DEEZ NUTS
Feb 24, 2016
Yes 100% Correct

  1. D
  2. C
  3. B
  4. B 9 0
    posted by yes
    Mar 7, 2016

d
c
b
b is correct got 100%

4 0
posted by aniyah
Oct 25, 2016
THX
100%

2 0
posted by Anonymous
Feb 1, 2017
nbvmbv

0 0
posted by bnb
Feb 16, 2017
I got 100/100 🙂 Thanks pacman

0 0
posted by carry on
Feb 27, 2017

  1. D
  2. C
  3. B
  4. B 3 0
    posted by Wally West
    Mar 21, 2017

100%

0 0
posted by Kinsey
Sep 17, 2017
Connexus students is 100%
1.D
2.C
3.B
4.B

Idk about khan academy

4 0
posted by That girl doesn’t wanna work cause she’s behind xo
Oct 5, 2017
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!!!!

0 0
posted by Connexus shopkin
Nov 8, 2017
Connexus Student 100%
Thankyou everybody

0 0
posted by Stephani
Sep 18, 2018
Thx I love this

0 0
posted by Rando
Sep 18, 2018

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

0 2
posted by O.O
Nov 28, 2018
Thanks a bunch, really helped!

0 0
posted by BlobFish2000
Nov 29, 2018
Got 100% THANKS

0 0
posted by BlobFish2000
Nov 29, 2018
Thanks ^^

0 0
posted by cottencandygirl
Jan 13, 2019
😀
Thanks~~

0 0
posted by AnimeLover 😀
Jan 16, 2019

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

0 0
posted by Unknown forever
Jan 16, 2019
1.D
2.C
3.B
4.B

0 0
posted by Joen Jungkook and Kim Taehyung
Mar 21, 2019

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