Conservation of Matter

The amount of atoms should be the same on both sides of a chemical equation.

• True
• False

2Na + Cl₂ --> 2NaCl

• Balanced
• Not Balanced

If reaction starts with 20g of reactants it should produce... 

• a total of 40g of product
• a total of 10g of product
• a total of 80 g of product
• a total of 20g of product

If you put 200 grams of ice into a pitcher with 900 grams of water. Then get distracted and come back later to find that the ice has melted in the water. How many grams of water do you now have in the pitcher?

• 200 g

• 700 g

• 1,100 g

• 9,200 g

What are the products of the chemical reaction pictured?

• CH₄ and CO₂

• CH₄ and O₂

• CO₂ and H₂O

• O₂ and H₂O

What is the left part of a chemical equation called?
H_{2 +} O → H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.
• The total mass of the reactants is greater than the total mass of the products.
• The total mass of the reactants is less than the total mass of the products.
• Matter is not changed.
  

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 

• 2
• 4
• 6
• You need more information to answer this question

How many nitrogen atoms does NH₃ have?

• 1
• 2
• 3
• 4

If 20g of sugar is stirred into a beaker containing 100g of water. What would the mass of the dissolved solution be after the sugar is dissolved fully?

• 20g

• 100g

• 80g

• 120g