law of conservation of mass

Hotspot

Which side is the reactants?

Law of conservation of Mass

SWBAT:
describe how the total number of atoms does not

change in a chemical reaction and thus mass is conserved by developing and using models.

SWBAT (Language Obj)- I will Discuss the experiment and the mass of the experiment after the reaction. Then I will write down the balanced equation after the re arrangement of the elements.

Open Ended

Write down the elements and atoms per element.

EX:

Ti-2

....

Open Ended

Do both sides (Reactants and products) contain the same elements and same amount of atoms?

LAB

Open Ended

What was the starting mass before the reaction happened?
What was the mass after the reaction happened?

Why do you think the mass ended up like that?

Open Ended

What was some evidence that a chemical reaction happened and not a physical change?

Work on this with your partner. Help each other.

Small group..

Voice level 1

​https://quizizz.com/join?gc=92742010

GP

Open A new tab of quizizz.

Enter the code I have on the board

​

Mastery Peak!

Exit ticket

Next slide

Open Ended

Does this chemical equation represent the law of conservation of mass?

Why or why not?

Sentence stem: This chemical equation does/does not follow the law of conservation of mass because....