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Science Midterm Vocab
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Density=
mass/volume
chemical bond
the attractive force that holds atoms or ions together
ionic bond
a bond formed by the attraction between OPPOSITELY charged ions
molecular formula
a chemical formula that reports the actual numbers of atoms in one molecule of a compound
covalent bond
a bond formed when atoms share 1 or more pairs of electrons (NM + NM)
polyatomic ion
an ion made of 2 or more atoms that are covalently bonded & act like a single ion
To make a covalent bond, valence electrons are ________
Shared
When a metal & a non-metal bond, electrons are _____
Transferred
What happens to atoms in a chemical reaction?
They re-arrange
Coefficients
The number that can be adjusted to balance chemical equations
Solute
dissolves the solvent
Solvent
the substance being dissolved
3 properties of a BASE
OH
Slippery
Bitter
2 properties of a ACID
sour
H
Quantitative
Tells quantity
numbers (#)
Qualitative
main idea
no numbers
Compound
a substance with mixed elements
Molecule
the smallest unit showing the elements of the substance
Atom
the smallest unit of an element
The Law of the Conservation of Mass
Mass cannot be created or destroyed
Cation
+ ion
Anion
- ion
Isotopes
Atoms having the same # of protons, but a different # of neutrons
Atomic Number
# of protons and electrons
Endothermic
energy absorbed
cold
Extothermic
energy released
warm
Author
craziibabe47
ID
4565
Card Set
Science Midterm Vocab
Description
Science Vocab Midterm
Updated
2010-01-20T03:49:37Z
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