Lesson 7 Science Review

The Law of Conservation of Mass States

• Energy cannot be created nor destroyed, it can only change form.

• Mass cannot be created nor destroyed, it can only change form.

• Matter cannot be created nor destroyed, it can only change form.

• Mass can be created or destroyed, it cannot change form.

Tags

NGSS.MS-PS1-5

In this chemical equation , CH₄ and 2O₂ are called the...

• Products

• Reactants

• Coefficient

• Subscript

Tags

NGSS.MS-PS1-2

In this chemical equation , CO₂ and 2H₂O are called the...

• Products

• Reactants

• Coefficient

• Subscript

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

In this chemical equation , the 2 in front of the 2O₂ and the 2 in front of the 2H₂O are called the...

• Products

• Reactants

• Coefficient

• Subscript

Tags

NGSS.MS-PS1-5

In this chemical equation ,the small numbers dropped down below the letters like the 4 in CH₄ are known as the

• Products

• Reactants

• Coefficient

• Subscript

Tags

NGSS.MS-PS1-1

If you have 15 grams of Baking Soda and 20 grams of Vinegar as products, what would you expect the mass of your reactants to be?

• 15 grams

• 20 grams

• 5 grams

• 35 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Carbons are on EACH side of the chemical reaction?

• 1

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

There are 4 hydrogens in the products of the equation. How many hydrogens would you expect in the reactants?

• 1

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Looking at the reactants, there is _____ molecule(s) of CH₄ and _______ molecule(s) of O₂.

• 1, 1

• 1, 2

• 2, 2

• 2, 4

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Looking at the products , there is _____ atom(s) of Oxygen in CO₂ and _______ atom(s) of Oxygen in 2H₂O.

• 1, 1

• 1, 2

• 2, 2

• 2, 4

Tags

NGSS.MS-PS1-1