Vocab.
Energy Transfer
The conversion of one form of energy into another, or the movement of energy from one place to another.
Minus - 700
In a chemical reaction:
The atoms of the reactants unbond, rearrange, and then rebond to form the products
Minus 1000 points
If more reactants are used in a chemical reaction, more products will be produced. This is because:
More reactants have more atoms to react to form more products
Minus 500 points
It takes ________ to break bonds, and _______ is released when bonds are formed.
Energy, Energy
Bonus 600 points
In a chemical reaction, Substance A reacts with Substance B and forms a new substance AB. The chemical equation for this reaction is A+B=AB where A and B are the reactants and AB is the product. If you add more and more of only Substance A, there will be:
More and more of product AB but limited by the amount of B
Minus 300 points
Products
a substance that is formed as the result of a chemical reaction.
Bonus 300
If two substances react and the temperature of the mixture decreases, the reaction is:
Endothermic
If two substances react and the temperature of the mixture increases, the reaction is:
Exothermic
Bonus 1500 points
Which of the following is not true for a chemical
reaction:
a. Heat is usually involved
b. It can easily be reversed
c. A completely new substance is formed
d. It involves a change in energy
It can easily be reversed
Bonus 600 points if someone from your team can make 3 shots in the trash basket.
In a chemical reaction, if the reactants are heated, the reaction usually happens:
Faster
Investigation
a process of finding the answer to a question using various research methods.
If a reaction is exothermic,
More energy is released when the bonds in the products are formed than is used to break the bonds in the reactants
List 5 exothermic reactions to get 300 bonus points
Which of the following is an exothermic reaction?
a. Chocolate melting
b. Coal-burning
c. An egg boiling
d. Water evaporating
Coal-Burning
Sorry minus 100 points
A student placed a thermometer in a test tube half-filled with water. She then added a spatula of ammonium chloride to the test tube and observed the temperature decrease. This is an example of:
An endothermic reaction
Minus 300
If a reaction is endothermic,
It takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed
Minus 200 points
Criteria
a standard by which something may be judged.
Bonus 2000 What! No Way!
Products in a chemical reaction are usually formed more quickly at higher temperatures.
True
In a chemical reaction, only the atoms present in the __________ can end up in the products.
Reactants
Bonus 400 points, YES!!!!
A cake is made by mixing ingredients and placing the material in an oven for baking. This is an example of an exothermic reaction.
True or False
False
Define MRE
Meal, Ready-to-Eat
Minus 600 - way too easy
Constraints
ways of describing the effects of forces that are best not explicitly introduced into the problem.
What type of reactions require energy in order to start?
Both endothermic and exothermic reactions
Minus -700 Ouch that hurt!
Two molecules are more likely to react if they have more energy when they collide.
True or False
True
Sorry Minus 300 points
Which statement about energy and chemical reactions is true?
a. All chemical reactions involve energy
b. Breaking bonds in reactants requires energy
c. Forming bonds in products releases energy
d. All of the above
D. All of the Above
Define Chemical Reaction
a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.