Chemical Reactions
Chemical Interactions
Speeding Things Up
Chemicals and Light
Miscellaneous
100
In a chemical reaction, which compounds are consumed and which compounds are produced?
What are the reactants are consumed and the products are produced?
100
When a reactant is not converted to a product, it is _____.
What is unreacted?
100
The forces between atoms that hold those atoms together to form compounds.
What are chemical bonds?
100
Wavelength is usually expressed in _____.
What are nanometers?
100
An insulated container that prevents a chemical reaction from gaining heat from its surroundings or losing heat to its surroundings.
What is a calorimeter?
200

The amount of a product produced by a chemical reaction compared to the amount of reactant.

What is yield?

200

Describes a chemical reaction using the formulas of all reactants and products.

What is a chemical equation?

200
A chemical that accelerates a chemical reaction without being consumed in the reaction.
What is a catalyst?
200
One of the characteristics of light is that it behaves like ________.
What is a wave?
200

Why is NaCl + H2O --> H2O + NaCl NOT a chemical reaction?

What is, because the atoms are not rearranged?

300

A description of a chemical compound using the letter designations of the elements.  Give an example.

What is a chemical formula?  Ex. H2O, CO2, HCl, H2SO4, NH4OH, etc.

300
Define consumed in relation to chemical reactions.
When reactants are converted to products, or when reactants are used up.
300
The amount of reactants consumed or the amount of products produced during a specific time period.
What is the rate of reaction?
300
An instrument used to measure the amount of light of a specific wavelength that is absorbed by a chemical compound.
What is a spectrophotometer?
300
Where do we write in a catalyst in a chemical equation?
What is, above the yield sign?
400
Name three examples of evidence that a chemical reaction has occurred.
What are temperature change, color change, and gas formation?
400

What MUST happen for reactants to form products?

What is, reactants MUST come into contact with each other?

400
Name three ways in which we can increase the rate of a chemical reaction.
- Increase the concentration of the reactants. - Stir the reactants. - Increase the temperature. - Introduce a catalyst.
400
The ability of a chemical compound to take in color of a specific wavelength.
What is absorbance?
400
After one reactant is used up in a chemical reaction, what happens to the products?
What is, no more products are produced?
500

In a chemical reaction, how do the amounts of the reactants affect the amounts of products produced? Name TWO ways.

- As the amounts of the reactants increase, the amounts of the products produced also increase. - If one reactant is present in smaller amounts than another reactant, the amount of product produced will rely on the reactant present in lower quantities.

500

How do reactants interact to form products in a chemical reaction? Consider the atoms in the compounds.

What is, the bonds between atoms in the reactant molecules are broken and the atoms rearrange themselves to form product molecules?

500
In a chemical reaction, what is the relationship among the reactants, the products, and the time it takes to complete the reaction?
The more reactants added to a reaction, the more products that will be produced and the faster they will be produced.
500
How do we perceive color?
What is, wavelengths of light are /reflected/ by objects, and this reflected light is the color we see?
500
How do we know that the Law of Conservation of Matter relates to chemical reactions?
What is, the amounts of atoms on each side of the yield symbol are always equal?
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