Pre-flashcard Law of Conservation of Mass

Front

Law of Conservation of Mass

Back

Mass is never created or destroyed

Front

Matter can not be created nor destroyed: it can only be

Back

Transformed, changed

Front

If a reaction starts with a total 75g of reactants, it should produce:

Back

a total of 75g of products

Front

Bob puts 200 grams of ice into a pitcher with 900 grams of water. How many grams of water does Bob now have in the pitcher?

Back

1,100 g

Front

In the reaction AB → A + B, reactant AB has 12g and product B has 5g. How many grams should product A have?

Back

7g

Front

Is this an example of a Physical or Chemical change?

Back

Chemical

Front

Using the picture, what is the coefficient of this chemical compound?

Back

4

Front

What is the subscript of the chemical compound in the picture?

Back

3

Front

How many elements does PbNO₇ have? Hint: Every capital letter😉

Back

3

Front

Which of the following is a physical change?

• rusting metal
• boiling water
• leaves changing color
• bubbling of an antacid tablet in water

Back

boiling water