Mid-Year Review

Chemistry, Earth History, Infectious Diseases

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

-Physical and Chemical Properties

-Physical and Chemical Change

-Elements, Compounds, and Mixtures

-Periodic Table

*Groups and Periods

*Metals, Non-Metals, Metalloids

*Atomic Number, Atomic Mass, Protons, Neutrons, and Electrons

-Law of Conservation of Mass


Physical Properties and Chemical Properties

Physical properties is Characteristics that you can observe without changing the composition of the substance, while Chemical properties is only observing it by changing the identity of the substance.

Physical change and Chemical Change

Physical change is any change that does not involve a change in the substance chemical identity. Chemical change is any change that results in the formation of a new chemical substance.

Element, Compound, and Mixture

Element are building blocks of matter made of atoms, Compound is substance formed when two or more elements chemically combine, Mixture is combination of two or more different substances that id mixed but not combined.

Periodic Table

It is grouped in into groups periods and groups. They are divided into three category's Metal are in the left, non- metals on the right, and metalloids are in the middle staircase line. Atomic number of protons and electrons in an atom of one element the # of protons always = the number of electrons to find the proton you like at the atomic #. Atomic mass is the sum of protons & neutrons in the nucleus of and atom.

Law of Conservation of Mass

The Law of Conservation of Mass states that matter can not be created nor destroyed.



Matter is anything that has mass or takes up space.


Solution is a substance made as a result of mixing solids and liquid and the solid dissolves.


An Atom is the basic building block for all matter.

Earth History

-Law of Superposition

-Index Fossils

-Ice Cores

-Geologic Time Scale

-Relative and Absolute Dating

-Half-Life/Radioactive Decay


Law of Superposition

The Law of Superposition is that younger rocks lie above older rocks if the layer has not been distributed.

Index Fossil

Index Fossil is a fossil found in a rock layer in geological age found in rock layers all around the world.

Ice Core

Ice Core is Times when continental glaciers cover large parts of earths surface, It tells us how the Earths temperature has been and how it has changed.

Geologic Time Scale

The Geologic Time Scale tells how long the earth has been here and all of the eras

Relative and Absolute Dating

Absolute Dating is the age of a rock given as the number of years since the rock formed. Relative dating is to determine weather an event or object is older or younger than others.

Half-Life/Radioactive Decay

Half-Life/Radioactive Decay is time it takes for half of the isotopes to decay.



Isotopes are different versions of the same element.


Geology is the study of science.


Extrusion is a material pushed or drawn through a die of the desired cross-section


Intrusion is a process of forcing a body of igneous rock between of through existing formations, without reaching the surface.

Infectious Diseases


*Virus, Bacteria, Fungi, Parasite

-Epidemic vs. Pandemic




*Agriculture, Medicine, Economy



Any organism to small to see by unaided eye, as virus, bacteria, fungi, parasites

Bacteria are single-celled organisms that lack of nucleus; Prokaryotic. Virus is a small non-living particle that invades and then reproduces inside a living cell. Fungi is living and it can cause diseases. Parasites are living they get to you by mosquitoes and other things.

Epidemic Vs. Pandemic

Epidemic is a disease affecting many people at the same time at a small area. However Pandemic is prevalent throughout an entire country,continent,or the whole world.


Some prevention is getting vaccines and having good hygiene. For treatments you can get antibiotics and a treatment soap.


Biotechnology is the use of living cells,bacteria,etc., makes useful products )such as crops that insects are less like to destroy or new kinds of medicine. There are many careers that include biotechnology one that I know is Clinical research associate. Biotechnology helps the agriculture and economy and medicine in many ways it can help find new ways to treat something