Unit 2 Review | Baamboozle - Baamboozle | The Most Fun Classroom Games!

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How many molecules of carbon dioxide does this formula indicate you have: 6CO2?

6

Balanced or Unbalanced? 6CO2 + 6H2O → C6H12O6 + 6O2

Balanced

Which of the following chemical formulas contains the most elements? a. CO b. NaCl c. NaHCO3 d. H2O

c. NaHCO3

Balanced or Unbalanced? Ba3N2 + 6H2O → 3Ba(OH)2 + 2NH3

Balanced

Briefly explain the Law of Conservation of Mass in your own words.

The Law of Conservation of Mass states that matter cannot be created or destroyed.

How do you determine if a chemical equation is balanced or unbalanced?

The total amount of atoms of each element must be the same on the reactants and products side of the equation.

Balanced or Unbalanced? Mg + HCl → MgCl2 + H2

Unbalanced

Physical or Chemical Change: A piece of bread molds.

Chemical

A(n) ____________________ is a shorthand representation of an element or compound using chemical symbols.

Chemical Formula

If the number of atoms of each element in a chemical equation are not equal on both sides of a chemical equation, then the equation is -

Unbalanced

Balanced or Unbalanced? SnO2 + 2H2 → Sn + H2O2

Unbalanced

In a(n) ____________________ equation the number of atoms for each element are equal for the reactants and products.

Balanced

Which of the following chemical formulas contains the most total atoms? a. CO b. H2O c. Fe2O3 d. C3H8

d. C3H8

The __________ are the elements or compounds on the right side of a chemical equation.

products

How many atoms, elements, and molecules does the following formula have: 4C3H8 ?

Atoms: 44, Elements: 2, Molecules: 4

Which number in a chemical formula tells you how many molecules of an element or compound you have?

Coefficient

Which of the answers below would be a correct chemical symbol of an element? a. BE b. be c. bE d. Be

Be

Physical or Chemical Change: A chain link fence rusting

Chemical

Physical or Chemical Change: Sugar dissolving in tea.

Physical

50 g of CO2 + 50g of H2O equals 20g of C6H12O6 + 40g of O2. Is this equation balanced or unbalanced?

Unbalanced

Which number in a chemical formula tells you how many atoms of an element you have?

Subscript

Balanced or Unbalanced? 3C + 2Fe2O3 → 4Fe + 3CO2

Balanced

Physical or Chemical Change: Melting glue in a hot glue gun

Physical

The ____________________ are the elements or compounds on the left side of a chemical equation.

Reactants

Which of the following chemical formulas contains the most molecules? a. 5CO b. 3H2O c. 2Fe2O3 d. 4C3H8

a. 5CO