Stacy Dortch » Welcome to Science!

Welcome to Science!

I graduated from Armstrong Atlantic State University with a Master's Degree in Middle School Education in May 2005. I have been teaching at Hardeeville Ridgeland Middle School for 5 years. I am also certified in Math, Language Arts, and Social Studies. My greatest passion is Math and Science. I love teaching children and learning new things. I have been teaching for over 11 years and still loving it!
 

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7th Grade Students and Parents

Hello Parents and Students
I graduated from Armstrong Atlantic State University with a Master's Degree in Middle School Education in May 2005. I have been teaching at Hardeeville Ridgeland Middle School for 5 years. I am also certified in Math, Language Arts, and Social Studies. My greatest passion is Math and Science.
 
I am honored to have the opportunity to teach you child(ren) and look forward to a very fun, engaging, and successful
It is my goal to keep parents informed regarding the progress of my students.There for I have sent home remind.com information for both Social Studies and Science. If you sign up for this program, you will receive sort messages on your cell phone to let you know when the students have quizzes, tests, projects, etc. are do.

Bacteria Notes

Bacteria Notes

Bacteria : Simple one-celled organisms that do not have a nucleus

  • Bacteria Are Alive!!! One cell carries out all life functions
  • Bacteria have a Cell Wall-like plant cells

Flagellum: Hairlike structure used by bacteria to move

Bacteria locomotion

  • Cannot move themselves: Carried in air and water

Can move themselves: Use Flagellum

Three Shapes

1.Coccus: round

2. Bacillus: rod-shaped

3. Spirillum: spiral-shaped

Helpful Bacteria

  • Decomposers: Breakdown dead organisms and make nutrients for living things to grow.
  • Help make foods like Cheese and Yogurt

Harmful Bacteria

  • Cause Diseases like strep throat, pneumonia, and Tuberculosis (TB)
  • Food poisoning

Quick Chemistry

 
 
Atom = the smallest piece of matter and cannot be broken down into a simpler substance.
 
Element = pure substances made of only 1 kind of atom.
 
Compound = made of 2 or more different kinds of atoms bonded together.
 
Chemical Reaction = Process in which the physical and chemical properties of the original substance(s) CHANGE as new substances with different properties are formed.
 
Product = Substances produced in a chemical reaction (to the right of the arrow).
  
Reactants = Substances that begins the chemical reaction (to the left of the arrow).
Law of Conservation of Matter = law that states no matter can be created or destroyed.
Molecule = two or more atoms of the same kind or different kinds attached.
 
Mixture = a combination of two or more substances that are not chemically combined.
 
Homogenous = A mixture that looks the same and has the same characteristics throughout.
 
Heterogeneous = A mixture where the different substances are visible throughout.
 
Solubility = the ability of an object to dissolve into other substances.
Mass = is the amount of matter that something is made of.
 
Weight = is the amount gravity is pulling on an object. 
 
Volume =the amount of space an object takes up.
 
Density = the amount of matter in a given space or volume.
 
Physical Change = a change of matter without changing the identity of the substance.
 
Chemical Change = a change that occurs when 2 or more substances are combined into entirely new substance with all new properties

Quick Life Science Vocabulary

Life Science
Fast Facts
 
•       Population= a group of individuals of the same species in the same area.
 
•       Community= consists of all of the populations of different species that live and interact in an area.
 
•       Ecosystem= made up of a community of organisms and its abiotic environment.
 
•       Limiting Factor= biotic and abiotic factors that prevents a population from increasing.
•       Carrying Capacity= the supply of the most limited resources for a particular species at a particular time determines the …
 
•       Symbiosis= any close relationship between two different species where the individuals can be helped, harmed or unaffected.
 
•       Mutualism= a symbiotic relationship in which both species benefit.
 
•       Commensalism= a symbiotic relationship in which one species benefits and the other is neither helped nor harmed.
 
•       Parasitism= a symbiotic relationship in which one species benefits and the other is harmed.
•       Energy Pyramid= shows the flow of energy in a food chain with LESS energy as each level goes up.
 
•       Photosynthesis= process by which plants use light, water and carbon dioxide to make glucose and make energy available to all living things.
 
•       Respiration= process used by cells to break down glucose that living organisms obtain when they consume other organisms.
 
•       Asexual Reproduction= when only one parent is needed for reproduction. Offspring is a clone of the parent.
 
•       Sexual Reproduction= when two parents are needed for reproduction. Offspring is different from the parents.
 
•       Gene= pieces of DNA that carry hereditary instructions and are passed from parent to offspring.
 
•       Chromosome= the structure that DNA is organized in, comes in pairs with half coming from each parent.
 
•       Genotype= the letter combination of alleles showing the genetic makeup of an organism.
 
•       Phenotype= an organisms physical appearance based on its genetic makeup.
•       Allele= the different forms of a gene.
 
•       Mutation= any change in a gene or chromosome

Chemical and Physical Properties

Physical and Chemical Changes
 
Unit Goals:
  1. Students will be able to classify substances according to their physical and chemical properties.
  2. Students will be able to identify physical and chemical changes in matter.
 
“I Can” Statements:
Unit Goal
“I Can” Statement
1
I can define and give examples of physical properties of matter.
1
I can measure mass, length, and volume of various objects using appropriate units.
1
I can find the density of objects based on their mass and volume.
1
I can describe how the density of an object can help identify the substance.
1
I can describe the states of matter and their molecular arrangement.
1
I can describe matter based on its chemical properties (reactivity, flammability).
2
I can describe how matter can by physically changed.
2
I can predict the physical changes to the speed of the molecules that occur during freezing, melting, evaporation, boiling, and condensation.
2
I can relate the states of matter of phases to the motion of their particles during phase changes.
2
I can identify chemical changes in matter based upon the 7 signs of a chemical change.
2
I can provide evidence that mass is conserved during chemical changes and state the Law of Conservation of Mass.
2
I can compare and contrast physical and chemical changes in matter.
 
Vocabulary:
Physical Property
Chemical Property
Mass
Weight
Volume
Density
Liquid
Plasma
Gas
Solid
Phase change
Molecule
Melting
Freezing
Evaporation
Boiling
Vaporization
Sublimation
Deposition
Condensation
Compound
Chemical Reaction
Kinetic Theory of Matter
Flammability
Reactivity
Law of Conservation of Mass

Atoms Element Periodic Table Powerpoint

Unit Goal
“I Can” Statement
1
I can define atoms, molecules, elements, mixtures, and compounds, and explain their relationships.
1
I can describe the structure of the atoms, including protons, electrons, and neutrons.
1
I can explain evidence that supports the theory that matter is composed of atoms and molecules.
2
I can interpret an element key such as atomic number, symbol and mass.
2
I can write element symbols.
2
I can explain how the periodic table is organized.
2
I can predict the placement on the periodic chart of the first 20 elements, given their atomic number and mass.
2
I can recognize the properties and uses of the different groups of elements.
2
I can classify elements into groups based on similar properties.
2
I can explain that 2 or more elements combine to form compounds and give 3 examples.
2
I can write chemical formulas and identify products and reactants in a chemical equation.
2
I can predict elements that would combine to form various compounds based on their placement on the periodic table (ionic bonds).
3
I can compare and contrast mixtures and compounds.
3
I can identify heterogeneous and homogenous mixtures and give examples.
3
I can identify mixtures as suspensions, colloids, or suspensions.
3
I can separate different mixtures based on the properties of the different parts of the mixture.
 
Vocabulary:
Matter
Atom
Proton
Neutron
Electron
Electron Cloud
Element
Compound
Reaction
Product
Reactant
Conservation of Matter
Mixtures
Homogenous
Heterogeneous
Colloid
Suspension
Solution
Solute
Solvent
Solubility
Acid
Base
pH