Chemistry, Q@!Uiz
Combustion
(C,H,O) + O2 → CO2 + H2O
1 Mole of a Substance
1 mole of a substance is its combined mass in grams which is equal to the collective average atomic mass
Single Displacement
A + BC --> AC + B
Physical Change
A change in a substance that does not involve a change in the identity of the substance (i.e. ripping paper, cutting wood, etc)
Chemical Change
A change in matter that produces one or more new substances (i.e. burning paper, cooking an egg, etc.)
Dimensional Analysis
A technique of problem-solving that uses the units that are part of a measurement to help solve the problem
Synthesis
A+B-->AB
Balancing Equations
Keep mass of products and reactants the same by adjusting coefficients as necessary
Mole
The SI base unit used to measure the amount of a substance, equal to 6.022 x 10^23 particles/atoms/formula units
Stoichiometry
The calculation of quantities in chemical reactions
Law of Conversation of Matter
The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
States of Matter
solid, liquid, gas
Double Displacement
AB + CD --> AD + CB, elements switch places
Decomposition
AB->A+B
Matter
Anything that takes up space and has mass.