August
Stuff of which the universe is composed
Matter
Atoms of the same Element with a different number of neutrons
Isotopes
A charged atom
Ion
Notation expressing a number as it is typically written with 0's, commas, and/or decimal points
Decimal Notation
7.31 x 102 mL
Substance that cannot be broken down into other substances by chemical methods
Element
The CPD containing one aluminum atom and three chlorine atoms
AlCl3
Compound consisting of a metal and a nonmetal
Binary Ionic Compound
Numbers recorded in a measurement
Significant Figures
Add (1.26 x 104 mg) + (3.78 x 103 mg)
1.64 x 104 mg
Substance with a uniform composition
Pure Substance
Spontaneous breakdown of the nucleus
Radioactive Decay
Compound that contains 2 nonmetals only
Binary Covalent Compounds
5.45 x 10-6 kg
Subtract (6.39 x 10-3 hs) - (1.825 x 10-4 hs)
6.21 x 10-3 hs
The two types of mixtures
Heterogeneous and Homogeneous
Radioactive decay where nucleus releases one electron
Beta-Particle Production
Ion consisting of 2 or more atoms covalently bonded together
Polyatomic Ion
Multiply (5.62 x 107 kL)(7.84 x 105 kL)
4.406 x 1013 kL2
Divide (6.216 x 1020 dm)/(8.007 x 1022 dm)
7.763 x 10-3 dm
The two types of pure substances
Elements and Compounds
Radioactive decay where one photon of light is emitted from the nucleus
Gamma Ray Production
Molecule that produces H+1 ions when dissolved in H2O
Acid
The number of Sig Figs in 0.000070030
5
Multiply (3.541 x 10-17 cg)(5.089 x 10-19 cg)
1.802 x 10-35 cg2