# Reacting Masses

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• Created by: Lily04
• Created on: 10-06-17 15:54
Explain the steps for working out relative formula mass
1.) write down all the elements you have 2.) find the mass of each element by looking at the largest number on the periodic table 3.) multiply the mass number by the number of times it appears in the formula given. 4.) Add these end values together.
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What is conserved during a chemical reaction?
mass
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Fill in the gap: The mass of the product is ..... to the mass of the reactant/ limiting reactant used
directly proportional
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TOTAL MASS OF REACTANTS= ? and explain why.
TOTAL MASS OF THE PRODUCTS as no atoms are created or destroyed in a chemical reaction
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2Mg + 02 = 2Mg0 Work out and explain why this shows mass is conserved during a reaction
2x24=48 + 2x16=32 > 2x(24+16)=80 48+32=80 This shows no atoms were created or destroyed in the chemical reaction. When chemicals react, the atoms inside the reactants swap places to make new compounds- the products.
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## Other cards in this set

### Card 2

#### Front

What is conserved during a chemical reaction?

mass

### Card 3

#### Front

Fill in the gap: The mass of the product is ..... to the mass of the reactant/ limiting reactant used

### Card 4

#### Front

TOTAL MASS OF REACTANTS= ? and explain why.

### Card 5

#### Front

2Mg + 02 = 2Mg0 Work out and explain why this shows mass is conserved during a reaction