Ch2 Part1 Basic Chem Word Scramble
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Question | Answer |
anything that occupies space and has mass | Matter |
equal to matter in the object | mass |
remains constant regardless of gravity | mass |
solid, liquid, gas | three states of matter |
the capacity to do work, and exists in two forms | energy |
energy of motion | kinetic |
stored energy | potential |
chemical, electrical, mechanical, radiant | four types of energy |
energy stored in chemical bonds | chemical energy |
results from the movement of charged particles | electrical |
energy directly involved with moving matter | mechanical |
energy that travels in waves | radiant |
energy is... | easily converted from one form to another |
substances that cannot be broken down into simpler substances by ordinary chemical means | elements |
carbon, hydrogen, nitrogen, oxygen | make up roughly 96% of body weight |
smallest particle of element retain characteristics of element | atoms |
elements are designated by.. | 1, 2, or 3 letter abbreviation called the atomic symbol |
each atom has a central -packed with protons and neutrons | nucleus |
positive charge weighs 1 amu | proton |
no charge weighs 1 amu | Neutrons |
found around the nucleus negative charge weightless | electrons |
protons= | electrons |
atoms are electrically.. | neutral |
2D model of atomic structure | Planetary model |
3D model talking about orbital regions, not orbital patterns | orbital model |
elements are identified based on | their number of protons, electrons, neutrons |
atomic number= | # of protons in an element |
same number of protons and electrons of the same element | isotopes |
average of the relative weights of all isotopes of an element | atomic weight |
heavier unstable isotopes of an element that spontaneously decompose into more stable forms | radioisotopes |
time required for a radioactive isotope to lose 1/2 of it's radioactivity | half-life |
combination of 2 or more atoms | molecule |
2 or more atoms of the same element combined | molecule of that element |
2 or more atoms of difference elements combined | molecule of a compound |
substances made of two ore more components mixed physically | mixture |
homogeneous mixtures of compounds that may be liquids, gases, or solids | solution |
greatest amounts | solvents |
smaller amounts | solutes |
may be described by its concentration expressed as % or in terms of molarity | solutions |
heterogeneous mixtures | colloids or emulsions |
heterogeneous mixtures with large (often) visible solutes that tend to settle out | suspensions |
difference between mixtures and compounds | chemical bonding does not occur in mixtures |
can be separated into chemical components by physical means | mixtures |
separation is done by chemical means | compounds |
an energy relationship between electrons of the reacting atoms | chemical bond |
Created by:
jennipehrdee
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