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SOL STUDY!!

brief vocab of each unit to cover things from 6th, 7th & 8th grade science

TermDefinition
Newton's 1st Law an object at rest will remain at rest and an object in motion will remain in motion unless acted upon by an outside force.
Newton's 2nd Law the net force of an object is equal to the product of its acceleration and its mass
Newton's 3rd Law for every action, there is an equal and opposite reaction
Mass the amount of matter in a substance
Weight a measure of force due to gravity acting on a mass
Density the amount of mass in a given volume
Independent Variable what the scientist changes
Dependent Variable what the scientist measures or observes
Control Group the normal group; group without the independent variable
Constant what stays the same throughout an experiment
Quantitative Data Observations involving numbers
Qualitative Data Observations that are descriptions without numbers
Hypothesis An informed guess about what will happen in an experiment
Observation Something that I see, smell, taste, hear or feel; a fact
Conclusion the answer to my question; what i infer at the end of my experiment based on my observations
Experiment what i do to test my hypothesis
Matter anything that has mass and take up space; three phases and all are made up of atoms
Plasma an electrically charged gas that have extremely high energy levels
Element a pure substance that cannot be further separated into a simpler substance by chemical or physical means
Compound a pure substance composed of two or more elements chemically combined
Mixtures a combination of two or more pure substances that are not chemically combined
Solutions a very well mixed mixture, having the same properties throughout
Acids any substance that produces hydrogen ions (sour, b->r, corrosive)
Bases any substance that produces hydroxide ions in water (slippery, bitter, corrosive, r->b)
Neutralization Reaction when an acid and a base are mixed, chemical reaction occurs, forming salt and water
Period a horizontal row of elements in the periodic table
Group ("family") elements in the same vertical column of the periodic table; helps give you the number of valence electrons
Created by: lauren11
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