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46 Cards in this Set
- Front
- Back
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a scientific guess to explain an occurrence |
hypothesis |
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an explanation of natural phenomenon that is backed by scientific evidence |
theory |
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anything that occupies space and has kass |
matter |
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substances that cannot be broken down by ordinary means |
elements |
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educated guess |
hypothesis |
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an experiment that contains only one experimental variable |
controlled experiment |
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the thing being testef |
independent variable |
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the things in the experiment that MUST be the same |
constants |
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the data that is observed and measured as a result of the independent variable |
dependent variable |
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bond where opposites attract |
ionic |
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when a substance has a slight charge |
polar |
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the genetic code for all living things |
dna |
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the action/ability of water to climb up the roots of a tree |
capillary action |
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speed up chemical reactions |
enzymes |
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means large |
macro |
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particles found orbiting there nucleus of an atom |
electrons |
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the sugar from which we get energy |
glucose |
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strongest bonds where electrons are shared |
covalent |
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a reasonable explanation for a series of effects |
theory |
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positively charged particles |
protons |
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water forming a membrane on its top |
surface tension |
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amino acids are the monomers |
proteins |
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fats that contain double bonds between their cartoons |
unsaturated |
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shows all of the elements and their properties |
periodic table |
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2 or more of these elements linked chemically |
compound |
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occurs when you have 2 or more atoms covalently bondef |
molecule |
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All living and non living things are composed of these very small units of matter |
atoms |
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non-charged particles |
neutrons |
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negatively charged particles |
electrons |
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atoms can join together through _?_ |
chemical bonding |
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_?_ + _?_ = Product |
Reactant |
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substances that are changed |
reactant |
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water makes up about ___ - ___ % of the bodies of living things |
65 - 95% |
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has a slight charge |
polar |
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can absorb lots of heat energy |
high specific heat |
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must absorb a large amount of heat before it turns into vapor |
high heat of vaporization |
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water is the _____ which means that many things can easily dissolve in it |
universal solvent |
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variables or conditions in an experiment that MUST be the same |
constants |
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water freezes from ___ to ___ |
top to bottom |
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___ floats |
ice |
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it may or may not support the hypothesis |
conclusion |
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matter is made up of _____ |
elements |
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SPONCH means? |
sulfur, phosphate, oxygen, nitrogen, carbon, hydrogen |
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anything that occupies space and has mass |
matter |
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the end result of a chemical equation |
product |
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the genetic code for all living things |
DNA |
