Question

Matter Interactions Unit Test
7 of 13 Items



Item 7
Use the table to answer the question.

Observation # Before Reaction During/After Reaction
1 mass = 30 grams mass = 42 grams
2 atoms of H = 5 atoms of H = 5
3 no gas gas present
4 two types of molecules three types of molecules
A scientist makes several observations about a chemical reaction and records them in the table shown. Which observation contains an error?

(1 point)

2

3

4

1

Answer 1

I would say observation 1 because during a chemical reaction no new atoms are formed and no atoms are taken away, a chemical reaction involves gases, and a chemical reaction can change the number of molecules.

Answer 2

lets hope you right

Answer 3

LIL PEEP IS BADDDDD

Answer 4

Hi guys I just wanted to clarify that if you are giving innocent people random//wrong answers, I will simply report your comment, to the owner of the website!! It Isn't cool to give people wrong answers, that will make them have F's on their test//quizzes//quick checks!!!! Just STOP. The owner of this website (Jiska) gave me permission to report the comments that are bad, or are giving the wrong answers ON PURPOSE. If you are one of those people, that think It's funny to give innocent people wrong answers, then this website is clearly not for you.
Hope you guys have a Blessed day//night, and please don't give out false random answers. Please and Thank you.

-Chloe♥

Answer 5

nobody asked chloe

Answer 6

Shut up chole

Answer 7

find god

Answer 8

Well Chloe was just trying to do what's right what's up with y'all