Vocab

Question 1

Intensive Properties

Answer 1

Independent of the amount of the substance that is present (ex: density, boiling point, color).

Question 2

Extensive Properties

Answer 2

Dependent upon the amount of substance present (mass, volume, or energy).

Question 3

Dalton’s Atomic Theory- Postulate 1

Answer 3

Each element is composed of extremely small particles called atoms.

Question 4

Dalton’s Atomic Theory- Postulate 2

Answer 4

All atoms of a given identity, but the atoms of one element are different from atoms of all other elements (oxygen atoms do not equal nitrogen atoms)

Question 5

Dalton’s Atomic Theory- Postulate 3

Answer 5

Atoms of one element cannot be changed into atoms of a different element (Law of conservation of mass/energy)

Question 6

Dalton’s Atomic Theory - Postulate 4

Answer 6

Atoms of more than one element combine to form compounds. A given compound always has the same relative # and types of atoms.

Question 7

Law of Multiple Properties

Answer 7

whenever the same two elements form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.

Question 8

empirical formula

Answer 8

a chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule.

Question 9

Strong Electrolyte

Answer 9

Electrolytes that are entirely dissociated into ions in solution

Question 10

Weak Electrolyte

Answer 10

When a current is passed through a substance, it does not dissociate entirely into ions. They are in equilibrium with their ions in a solution.

Question 11

Hund’s Rule

Answer 11

electrons will occupy their own suborbital before pairing up with another electron in the same orbital

Question 12

De Broglie Wavelength Formula

Answer 12

Wavelength = planck’s constant/massxvelocity