Formation of a precipitate, color change, change in color, change in odor, appearance of gas bubbles.
What is "evidence of a chemical reaction"?
100
An element that has 4 valence electrons.
An atom that can bond with multiple atoms.
An element that is in nearly everything around you.
What is CARBON?
100
Mass changes to energy
Nucleus changes
Formation of isotopes
radioactive decay
Fission
Fusion
What are nuclear reactions
100
liquid
solid
gas
mixture of 2 or more substances, completely blended
homogeneous mixture
What is a solution
BONUS:
What are the 2 parts of a solution?
100
increases the Hydronium ions in present in water.
lower on the pH scale
HCL
taste sour, conduct an electric current, corrosive
car battery, lemons
What is an acid?
200
Chemical Formulas, Chemical equations, reactants that yield a new product.
What is a Chemical Reaction?
How are Chemical Reactions modeled?
200
single bonds
double bonds
triple bonds
chains
How does CARBON form molecules?
200
Atoms wit the same number protons but different numbers of neutrons.
What is an isotope?
200
Dilute
Concentrated
Saturated
Supersaturated
What are the ways the concentration of a solution varies.
200
increases the hydroxide ions present in water
contain at least on hydroxide group (OH)
NaOH
taste bitter, feel slippery, conduct electric current
soaps, caustic
What is a base?
300
Balancing a chemical equation shows this.
If there are 2 carbons and 2 oxygens on one side, there should be 2 carbons and 2 oxygens on the other side.
What is the Law of Conservation of Mass
300
carbon, hydrogen, usually oxygen
possibly other elements
Hydrocarbons
Organic Acids
Carbohydrates
What are organic compounds
Note - a carboxyl group (COOH) is an O=C-O-H
300
Alpha Decay
Beta Decay
Gama Decay
What are the types of radioactive decay?
BONUS - Which is strongest, or can cause most damage?
300
the ability to dissolve in a given amount of solvent at a certain temperature and pressure.
What is solubility?
300
rainbow colored
0-14
relates the concentration of hydronium ions in a solution.
less than 7 is acidic
7 is neutral
more than 7 is basic
What is a pH Scale?
400
Increase concentration.
Increase surface area.
Increase temperature.
Introduce a catalyst.
What are different ways to increase the rate of reaction?
400
straight chains
branched chains
polymers
repeating groups of monomers
What structures can organic compounds form?
400
To Date Remains
To find and treat disease
For PET scans
Radioactive tracers
Gamma Knife
What are ways that radioactive decay is used?
400
has 2 affects on solid solutes:
they dissolve quicker
a greater amount can be dissolved
What is an increase in temperature
400
Acid Rain
pH of oceans, lakes, ponds, streams, soil
damage to human structures
break down of food web
What is the role of pH in the environment?
500
In endothermic reactions, energy is taken in.
In exothermic retains, energy is released.
Energy stored in the Reactants = Stored energy of products and released energy.
What happens to ENERGY during chemical reactions.
500
The letters/type of atoms in a molecule.
The number of each type of atom in a molecule.
Full structural formulas
Simplified structural formulas
What is a chemical formula, and what does a chemical formula do/show?
500
When large unstable nuclei break into smaller nuclei
and
The process by which nuclei of small atoms combine to form a new, more massive nucleus