Law of Conservation of Mass

Front

40 grams of calcium reacts with 71 grams of chlorine to produce _______ g of calcium chloride.

Back

111

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is the chemical equation 3 H₂ + N₂ → 2 NH₃ following the Law of Conservation of Mass?

Back

Yes, it is following the Law

Tags

NGSS.MS-PS1-5

Front

Is the chemical equation following the Law of Conservation of Mass? Na₂O + 2 CO₂ → 2 Na₂CO₃

Back

No, it is not following the Law

Tags

NGSS.MS-PS1-5

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Tags

NGSS.MS-PS1-5

Front

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have? Options: 4g, 5g, 9g, 14g

Back

4g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

The number in front of a compound or element is a

Back

Coefficient

Tags

NGSS.MS-PS1-5

Front

The number to the lower side of an element is a

Back

Subscript

Front

How many nitrogen atoms does NH₃ have?

Back

1

Tags

NGSS.MS-PS1-1

Front

How many oxygen atoms are in this chemical formula? Options: 6 oxygen atoms, 2 oxygen atoms, 3 oxygen atoms, 4 oxygen atoms

Back

6 oxygen atoms

Tags

NGSS.MS-PS1-1

Front

24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride

Back

62 

Tags

NGSS.MS-PS1-5