Chemistry Definitions

The fixed energy value an electron can have

• energy level

• atomic orbital

• energy sublevel

• quantum number

A region in space around the nucleus where there is a high probability of finding an electron

• energy level

• atomic orbital

• energy sublevel

• quantum number

a group of three elements with similar chemical properties where the atomic weight of the middle element is equal to the average of the other two

• octave

• triad

The Periodic Law states that when elements are arranged according to increasing........the properties of the elements repeat periodically

• atomic number

• mass number

• atomic mass

The relative attraction an atom has for the shared pair of electrons in a single covalent bond.

• Atomic Radius

• Electronegativity

• First Ionization

• Second Ionization

1 mole of substance

• is equal to the relative molecular mass of the substance in grams

• contains 6.02 x 10^23 particles of that substance

• has a volume of 22.4L at STP

• all of the above

A primary standard is

• found in a highly pure state

• has a high relative molecular mass

• can be made directly into a solution of known concentration

• stable in air and dissolves easily in water

• all of the above

All solutions are standard solutions

• True

• False

Heterogenous Catalysis...

• is a type of catalysis where the catalyst and the reactants are in the same phase

• is a type of catalysis where the catalyst and the reactants are in different phases

• can be explained using surface absorption theory

• can be explained using intermediate formation theory

The rate of a reaction can be defined as...

• the change in concentration per unit time

• the change in concentration of any reactant or product per unit time

• the change in concentration of any one reactant or product at a particular moment in time.

• total volume of product produced/ total time taken

Tags

NGSS.HS-PS1-5