Endothermic or Exothermic?
2H2 + O2 --> 2H2O + heat
What is Exothermic
100
The minimum amount of energy needed for a reaction to take place
What is activation energy
100
I am a shorthand method for writing what happens in a chemical reaction.
What is a chemical equation/formula
200
Ca+ O2 → CaO
2Ca+ O2 → 2CaO
200
Endothermic or Exothermic:
N2 + 3H2 + heat --> 2NH3
What is Endothermic?
200
________ happens when atoms or molecules collide with enough energy
What is a chemical reaction
200
I require that the same number of atoms of each element be the same in the products as in the reactants.
What is law of the conservation of mass
300
N2 + H2 --> NH3
N2 + 3H2 --> 2NH3
300
I can take the form of light, sound, heat, and electricity. What am I?
What is energy.
300
________ is a substance that increases the rate of a reaction, but does not participate in the actual chemical reaction.
What is a catalyst
300
I am present at the beginning of a chemical reaction while _____ are present when the reaction is over.
What are reactants and products.
400
Na3PO4 + CaCl2 --> NaCl + Ca3(PO4)2
2Na3PO4 + 3CaCl2 --> 6NaCl + Ca3(PO4)2
400
Burning is an example of which kind of reaction?
What is Exothermic
400
DAILY DOUBLE
TEAM 1: TEAM 2: TEAM 3: TEAM 4:
Explain in detail how, on a molecular level, temperature affects the rate of a chemical reaction.
400
I was present in the potato in your lab experiment that increased the rate of the chemical reaction
What is an enzyme
500
Na3PO4 + KOH --> NaOH + K3PO4
Na3PO4 + 3KOH --> 3NaOH + K3PO4
500
An instant cold pack used to ice an injured arm is an example of which kind of a reaction?
What is Endothermic
500
List the four factors that influence the rate of a reaction.
What is temperature, surface area, concentration, and catalyst.
500
DAILY DOUBLE
TEAM 1: TEAM 2: TEAM: 3 TEAM 4:
You cannot change me when I'm present, though you may want to. I tell you how many there is of something. And I tell you how things bond. Counting is the game; balancing (would be) my middle name.