TAKS Science Voc. Flashcard

Boiling Point
temperature at which a substance boils
Buoyancy
upward force a fluid exerts on an object
Chemical change
where a new substance is produced
Corrosive
eats away at a substance
Covalent Bond
Bond where electrons are shared between atoms (between 2 nonmentals)
Density
how close together the molocules are
Flammable
can catch on fire
Freezing point
temperature at which a substance freezes
Ionic Bond
Bond where electrons are donated or taken (between mental and nonmental)
Nonpolar Molecule
Molecule with no poles (only dissolves other nonpolar molecules, oil is best ex)
Oxidation
to rust
pH
used to determine if a substance is an acid or base
Phase
solid, liquid, gas
Physical change
Substance changes how it looks, but remains the same substance
Polar Molecule
Molecule that has poles (positive and negative, only dissolves other polar molecules, water is the most common ex.)
Products
things you get out of a reaction
Reactants
things you put into a reaction
Solubility
the amount of solute that can dissolve in a solvent
Solute
Stuff that does the dissolving
Toxic
Poisonous
Valence electrons
electrons in the outer shell of an atom
Viscosity
resistance of a fluid to flow (high viscosity = low flow)

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