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Law of Conservation of Matter/Mass in Chemical Reactions Quiz

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Law of Conservation of Matter/Mass in Chemical Reactions Quiz

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Questions and Answers

What is the term for a simple substance that cannot be broken down into smaller parts or changed into another substance?

Element (correct)

Solution

Mixture

Compound

When is a chemical equation considered balanced?

When the atomic mass of the products is greater than the atomic mass of the reactants

When the number of atoms in the reactants equals the number of atoms in the products for each element (correct)

When the products have more atoms than the reactants

When the number of reactants is greater than the number of products

What happens to the mass of an object if it is torn apart or burned?

The mass decreases both when torn apart and burned

The mass remains unchanged both when torn apart and burned (correct)

The mass increases when torn apart and decreases when burned

The mass decreases when torn apart but remains the same when burned

What are all matter made of according to the text?

Atoms Signup and view all the answers

Where is the atomic number located in the element square?

Top of the box Signup and view all the answers

How do you find the atomic mass of an atom?

By adding protons and neutrons in the atom Signup and view all the answers

What does the Law of Conservation of Matter/Mass state?

Matter is neither created nor destroyed in a chemical reaction. Signup and view all the answers

What does it mean for a chemical equation to be balanced?

The number of atoms you put in must equal the number of atoms at the end of your reaction. Signup and view all the answers

Does changing the shape of an object change its mass? Why or why not?

No, because shape does not alter mass; you cannot create or destroy more mass. Signup and view all the answers

Which subatomic particle lets us know which atom a Bohr model represents?

Protons Signup and view all the answers

What are rows on the periodic table and which direction do they go?

Periods, horizontal Signup and view all the answers

What is an atom?

The smallest particle containing the properties of a substance. Signup and view all the answers