Forming New Substances
Formulas and Equations
Don't Lose Your Balance
It's elMental
Is This Real Life?
100
The force that holds atoms together
What is a chemical bond
100
A combination of symbols and numbers used to represent a substance
What is a chemical formula
100
Balance : N + O2 --> 2NO2
What is 2N + 2O2 --> 2NO2
100
How many elements are in the following formula? 2NaCl
What is 2
100
True or false? Carbon dioxide is an odorless, colorless, and poisonous gas.
What is false (CO)
200
How can you tell a chemical reaction has occurred?
What is signs of a reaction (fizz, gas produced, etc) and a new substance is formed.
200
Chemistry in action
What is a chemical equation
200
Mg + N2 --> Mg3N2
What is 3Mg + N2 --> Mg3N2
200
How many carbon atoms are in this glucose example 2C6H12O6
What is 12
200
hydrogen reacts with oxygen in the air to make water. Write an equation to match this statement
What is 4H + O2 --> 2H2O
300
True or False When water freezes a new substance is formed by a chemical reaction
What is false
300
The symbol for rust is Fe2O3. (subscripts 2,3) How many iron molecules are in one molecule of rust
What is 2
300
C3H8 + O2 --> CO2 + H2O What are the new coefficients when you balance the equation
What is 1, 5, 3, 4
300
How many oxygen atoms are in 4Al2(SO4)3
What is 48
300
What is the formula for salt
What is NaCl
400
How do substances form during a chemical reaction
What is bonds break, atoms rearrange, and new bonds form
400
How many oxygen atoms are on the reactant side of the following equation : 4Fe + 3O2 --> 2Fe2O3
What is 6
400
What would the sum of the coefficients in this equation be if it were balanced Na + Cl2 --> NaCl
What is 5 (2+1+2)
400
How many atoms total are in 6 molecules of water
What is 18
400
Chemical equations are chemistry in action. What sign splits up the reactants from products in this action?
What is the yield sign
500
What causes chemical bonds to break
What is molecules bump into each other with enough energy to break
500
What does the law of conservation of energy state
What is energy is not created or destroyed, only transformed
500
CO2 + H2O --> C6H12O6 + O2 balance the equation
What is 6CO2 + 6H2O --> C6H12O6 + 6O2
500
How many atoms total are in 3 carbon monoxide molecules
What is 6
500
Why can subscripts not be changed in order to balance an equation
What is they would change the substance used, coefficients just change how much is used.
M
e
n
u