molecular mass – the combined mass (as given on the periodic table) of all the elements in a compound
Octet Rule – States that atoms will gain, lose, or share electrons in order to obtain 8 electrons in its valence shell
Protons – a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
Fire extinguisher – Small device used to put out fires.
The addition of a _____ lowers the activation energy. – Catalyst
Dimensional Analysis – A way to analyze and solve problems using the units, or dimensions of the measurements.
Arrhenius definition of acid and base. – Acid- produces H+ (hydrogen ion or proton) in water
Base- produces OH- (hydroxide) in water
Tetrahedral shape – 4 electron regions/domain
precipitate – a solid that forms from solution during a chemical reaction
The information in DNA and RNA is carried by the
elastic collision – is one in which no energy is lost
Atoms – Smallest particle of an element.
Lewis Dot Diagram – representation of an atom or molecule using only the element symbol
46)What are some household substances that are bases? – soap, lye, ammonia, clorox
state the structure and bonding in NH₃ – (discrete) covalent molecular
Which of the following liquids is basic? – Milk
The infоrmаtiоn in DNA аnd RNA is cаrried by the
empirical formula – Lists the elements in a compound, in the smallest whole-number ratio.
metallic character – more reactant down a period and to the left of groups
Choosing Correct Equipment SOL Practice Problem – Answer to SOL question: D
Negative charge – An atom gains one or more electron

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