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.