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Enviornmental Scienc

Enviornmental Science

QuestionDefinition
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
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