Show:
Evidence of a Reaction
Things that change the Rate of Reaction
Part of a Chemical Reaction
Types of reactions
Random
100

True or false: Chemistry is the study of matter and how matter changes with reactions.

True

100
The material that decreases the rate of a chemical reaction.
What is an inhibitor?
100
Parts on the right side, left side of equation and what the arrow means. (must be in order of asked)
What is products, reactants , yields?
100
The type of reaction that takes place to make hydrogen peroxide eventually turn into water.
What is decomposition?
100
The law that describes a balanced equation and is it true for both open and closed systems.
What is the law of conservation of mass and yes good for both open and closed systems?
200
These are formed to prove that a chemical reaction has occured.
What is : gas, color, change in properties (substrate) and overall production of one or more new substances?
200
The chemicals that act as biological catalysts..the action that they do to the reaction and the name of them.
What is an enzyme and speeds up reaction in living things?
200
In the reaction of ? ---> C + CO2 + H20, the elements in the reactants would be these...
What is C, H, O...as there was no matter created or destroyed so products are same elements as reactants?
200
The type of reaction where one element or two replace eachother or 2 elements trade places.
What is replacement reaction?
200
The minimal amount of energy needed to start a reaction.
What is activation energy?
300
This solid forms from a solution during a chemical reaction.
What is a precipitate?
300

If you wanted to supply activation energy to a reaction your best bet to start the reaction would be: Cool it......add a catalyst.....Heat it...add inhibitor PICK ONE

What is heat it?

300
Elements in this equation, compounds in this equation and the place where bonds are broken in this equation. 2Mg + O2 ----> 2MgO
What is Mg and O, MgO = cmpd, bonds broken between two O atoms to get it to bond for the final compound?
300
The type of reaction where more complex compounds are formed from simple ones.
What is a synthesis reaction?
300
True/False: The rate of a chemical reaction is independent of temperature.
What is false? Temp can change everything including the rate of the reaction.
400
True or false: a chemical reaction may be detected by observing changes in the properties of matter.
What is true?
400
The amount of one material present in a reaction in a given volume.
What is concentration?
400
The name of this....CaCO3...(not elemental name)..
What is a chemical formula in general?
400
The type of reaction a burning candle represents and the amount of energy of products as compared to reactants.
What is exothermic and energy of products less than reactants?
400
The equation that would represent the following: Sodium reacts with oxygen in a 2 to 1 ratio to produce sodium oxide..then balance it...
What is Na + O2 -----> Na2O Balanced: 4Na + O2 ---> 2Na2O
500
There is a lit candle, the wax has melted down the side and hardened on your table. The type of change that the wax has gone through chemical or physical change and explain...
What is physical change for the wax...only underwent change in form?
500
The reaction rate concept that describes why sawdust ignites easier than a chunk of wood.
What is surface area increase of wood to smaller pieces of wood that ignite easier this increases reaction rate of chemical reaction of burning.
500
True or false.. The amount of matter in a chemical reaction changes...
What is false...amount of matter always stays the same as per the law of conservation of matter?
500
Type of reaction that baking soda and vinegar are and how you know...
What is endothermic and energy absorbed and temp decrease in products?
500
The critical factor why enzymes in the body work so well and we could not live without them and they no longer work when we are dead...
What is enzymes work due to body temp, they increase surface area for body reactions to take place on and when our body temp decreases they do not work and die with us?