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46 Cards in this Set

  • Front
  • Back

a scientific guess to explain an occurrence

hypothesis

an explanation of natural phenomenon that is backed by scientific evidence

theory

anything that occupies space and has kass

matter

substances that cannot be broken down by ordinary means

elements

educated guess

hypothesis

an experiment that contains only one experimental variable

controlled experiment

the thing being testef

independent variable

the things in the experiment that MUST be the same

constants

the data that is observed and measured as a result of the independent variable

dependent variable

bond where opposites attract

ionic

when a substance has a slight charge

polar

the genetic code for all living things

dna

the action/ability of water to climb up the roots of a tree

capillary action

speed up chemical reactions

enzymes

means large

macro

particles found orbiting there nucleus of an atom

electrons

the sugar from which we get energy

glucose

strongest bonds where electrons are shared

covalent

a reasonable explanation for a series of effects

theory

positively charged particles

protons

water forming a membrane on its top

surface tension

amino acids are the monomers

proteins

fats that contain double bonds between their cartoons

unsaturated

shows all of the elements and their properties

periodic table

2 or more of these elements linked chemically

compound

occurs when you have 2 or more atoms covalently bondef

molecule

All living and non living things are composed of these very small units of matter

atoms

non-charged particles

neutrons

negatively charged particles

electrons

atoms can join together through _?_

chemical bonding

_?_ + _?_ = Product

Reactant

substances that are changed

reactant

water makes up about ___ - ___ % of the bodies of living things

65 - 95%

has a slight charge

polar

can absorb lots of heat energy

high specific heat

must absorb a large amount of heat before it turns into vapor

high heat of vaporization

water is the _____ which means that many things can easily dissolve in it

universal solvent

variables or conditions in an experiment that MUST be the same

constants

water freezes from ___ to ___

top to bottom

___ floats

ice

it may or may not support the hypothesis

conclusion

matter is made up of _____

elements

SPONCH means?

sulfur, phosphate, oxygen, nitrogen, carbon, hydrogen

anything that occupies space and has mass

matter

the end result of a chemical equation

product

the genetic code for all living things

DNA