help pls, check my work asap!??
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.
help pls asap?
Here are the answers:
1. D
2. C
3. B
4. B
I got a 4/4 100%!
Nicole is actually correct. I got a 4/4
Answers:
1.D
2.C
3.B
4.B
FazeBlazetaze, your the one who is actually wrong. I don't know what you did but this is a four question quick check so that means you cant get a 20% at all!!! You can only get 100%,75%,50%,25%, or 0%. Not A 20%. You must have been looking at the wrong quick check.
Everyone, go with Nicole on the answers.
Shes correct.
Nicole and Angel are correct! 4/4 100%
I did the answers from Nicole and I got a 100% so listen to her
4/4 100%
Nicole is 100% right I just got a 4/4
1. Incorrect. It is splitting water into hydrogen and oxygen.
2. Correct
3. Incorrect. They can be combined in many ways.