Mid-Year Review

Chemistry,Earth history , inflections disease

Chemistry-8.P.1- Understand the properties of matter and changes that occur when matter interacts in a open and closed container.

-Physical and chemical properties

-Physical and chemical changes

-Elements, compounds,and mixtures

-Groups and periods


-Atomic number,Atomic mass,Protons,neutrons,Electrons

-Law of conservation of mass


Earth History

Law of Superposition

Index fossils

Geologic time scale

Relative and Absolute Dating

Half-Life/Radioactive Decay


Infectious Diseases



Epidemic vs pandemic






Physical and chemical properties

Physical Proprieties- Odor,density,mass,volume,state,color,Can be observed or measured without changing it

Chemical Properties-Flammability,creativity,These properties can only be observed during a chemical reaction,Describes mater based on ti ability to change into new matter with different properties.

Physical and chemical changes

Physical change-Dose not from a new substance like ice cream melting

Chemical change- One or more substance are changed into new substances that have new and different properties like burning fire.


Elements- Building black of mater made of atom like oxygen.

Compound-Substances formed when two or more elements chemically combine.

Mixtures- Combination of two or more different substances mixtures but not combined like Bowl of cereal.

Groups and Periods

Groups- Columns (up and down) of elements on the periodic table that share common properties.

Periods-The periodic table have seven horizontal (left to right) rows know as periods.

Metals,Non metals,Metalliods

Metals-All the metals are on the right.

Nonmetals-All metals are on the left.

Metalliods-Their between the metals and nonmetals the step-down

Atomic number,Atomic mass,Protons,Neutrons,Electrons ,Law of conservation of mass

Atomic Number- It is equal to the number of protons in the nucleus.

Atomic Mass-The mass of an atom of a chemical element that is equivalent to the number in the atom.

Protons-It is the atomic number

Neutrons-The round of the atomic table

Electrons-Are the sum of protons in the atom

Law of conservation of mass-

Earth History

Law of Superposition-Ina rock layer the youngest layer is on the top and the oldest is on the bottom.

Index fossils-A fossil used to determine the relative age of a rock layer or fossil.

Ice core-Long cylinder of ice drilled from glaciers that tell you when gasses made up the atmosphere at different point in time.

Geologic time scale-Science that deals with earth substance.

Relative Dating-Used to determine the relative order of when things existed does not provide absolute dating.

Absolute Dating-Used to determine the specific age of the object organism.

Half-Life/Radioactive Decay-

Infectious Diseases

Microorganism-A organize especially a bacterium virus,or fungus.

Virus-Are confided to living but they living things.

Bacteria-Microscopic living organism usually one-celled that can be found everywhere.

Fungi-Something that goes on you foot like wear wet socks.

Parasite-An organism that lives in or on organism of other species know as the host cell.

Epidemic-Is an outbreak of an infectious disease with an small population.

Pandemic-Is a outbreak of an infectious disease that effects a large population.

Prevention/Treatment-Prevention is stopping something form happening. Treatment is Something that help get better.

Biotechnology -The use of living cells,bacteria, etc. to make useful products like crops.

Career- ActionBioScience.org, BioJobNet

Agriculture,Medicine,Economy-Agriculture is the science or practice of framing including civilization of solid for the growing crops and animals for food and wool.

Medicine is treatment to prevent you to getting a disease.