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Enviornmental Scienc
Enviornmental Science
| Question | Definition |
|---|---|
| Prejudice, in favor of or against one thing/group compared with another | Bias "I like apples more than I like broccoli" |
| proposed explanation for a phenomenon | Hypothesis "I think that there will be more red skittles than blue skittles" |
| the input or causes in an experiment (changes) | Independent Variable |
| the output or the effect (measurements) | Dependent Variable |
| quantities a scientist wants to stay the same (what is the same) (UNCHANGED!!!) | Controlled Variable or Constants |
| group used for comparison by lacking the manipulated or Independent variable (COMPARISON) | Control Group |
| group where something is changed; the "something" is the independent variable | Experimental Group "Katy Perry changes her hair colors between red and blue' |
| how many times groups are tested | Trials (3 TIMES!!!) |
| to make well-founded | Validate (check) |
| what you are trying to find out | Problem |
| Independent, Dependent, or Controlled. "3 plants are watered with salt water. Each plant receives a different concentration of salt solutions. The 4th plant receives pure water." | The 4th plant is the controlled variable because it receives pure water, and it is UNCHANGED!!! |
| Independent, Dependent, or Controlled." Three redwood trees are kept at different humidity levels." | Different humidity levels is the Independent because they are all different and it Changes |
| Independent, Dependent, or Controlled. "Height of tree is measured once a week" | Dependent, because they are collecting data on the height, which is a MEASUREMENT!! |
| What is the X on a graph? Independent or Dependent? | Independent because the Y depends on the X |
| What is the Y on a graph? Independent or Dependent? | Dependent because Y always depends on X. Example: The Height (on the Y) depends on the amount of weeks (on the Y) |
| Anything that has mass and takes up space | Matter |
| matter that always has exactly the same composition; an element or compound | Substance |
| created when 2 or more substances combine and retain their won properties | mixture |
| a compound created between the electrical attraction of a metal cation and a nonmetal anion ; electrons are transferred from one atom to another | Ionic |
| a molecule created when electrons are pulled closer to one atom as compared to another atom creating apparent changes | Polar Covalent |
| a molecule created when electrons shared between atoms are shared equally | Nonpolar covalent |
| any compound that CONTAINS hydorgen and carbon | Organic |
| any compound that that DOESN'T contain carbon along with hydrogen | Inorganic |
| a type of mixture in which the substances are so evenly distributed that its DIFFICULT to distinguish one substance in the mixture from another | Homogeneous |
| a type of mixture in which the parts of the mixture are noticibly different from one another | Heterogeneous |
| Polar or nonpolar? Dissolves in water | Polar |
| Polar or nonpolar? Dissolves in oil | nonpolar |
| Polar can only dissolve in polar or nonpolar | Polar |
| Nonpolar can only dissolve in polar or nonpolar | nonpolar |
| How are ions formed? | By gaining or losing valence electrons |
| Ionic a compound or molecules? | Compound |
| Polar and nonpolar are compounds or molecules? | Molecules |
| Polar or nonpolar? Has charges | Polar |
| Polar or nonpolar? Doesn't have charges | Nonpolar |
| Which of these substances is not an element? Water, hydrogen, aluminum, iron | Water |
| Tap water is classified as an? | Mixture |
| When something seperates into layers, what is it? | A suspension |
| What is the difference between a mixture and a compound? | A mixture has a variable composition (changes). A compound has a fixed composition (doesn't change) |
| What allows a mixture to be seperated by filteration? | Particle size |
| If a material contains 3 elements joined together in a fixed proportion, its a | Compound |
| A substance that is made up of only one kind of atom is an? | Element |
| A mixture that appears to contain only one substance is a? | Homogeneous Mixture (SAME) |
| AN element has a fixed composition because it contains only one type of what? | Atom |
| How do the properties of a compound compare to the properties of the elements that it contains? | They are different! |
| What is the basic units of matter? | Atoms |
| The particles labeled with negative signs in an atom is... | ELECTRONS!! |
| All material that has mass and occupies space is what? | Matter!!!!!! |
| Water is an example of what covalent molecule? | Polar |
| Common table salt, which dissolves in water is an what? | IONIC COMPOUND!! |
| Oil is an example of what covalent molecule? | NON POLAR |
| What is the difference between and Organic compound and an inorganic compound? | Organic contains hydrogen and carbon, and Inorganic does not |
| What is a simple organic molecule? | Hydrocarbon!! (Made from hydrogen and carbon) |
| Ionic or covalent? Shares electrons? | Covalent |
| Ionic or covalent? Exchanges electrons? | Ionic |
| Ionic or covalent? Between metal and nonmetal? | Ionic |
| Ionic or covalent? Between 2 nonmetals | Covalent |
| Ionic or covalent? Compound | Ionic |
| Ionic of covalent? Molecules | Covalent |
| How do you find the atomic number? | Its the number of protons |
| What is the atomic mass/mass number? | The number of protons and neutrons added together |
| Number of electrons is equal to what? | Number of protons |
| How do you find the number of neutrons? | Mass number minus atomic number |
Created by:
sstep25