Exam 1 Study Guide

Question 1

nomenclature used to identify the composition of matter

Answer 1

naming of compounds

Question 2

physical props of matter

Answer 2

displays

Question 3

chemical props of matter

Answer 3

only displays by changing its composition by a chemical reaction

Question 4

accuracy

precision

Answer 4

how close to true value

how close to each other

Question 5

common names of I, II, VII, VIII

Answer 5

I- alkali metals
II- alkaline earth metals
VII- halogens
VIII- noble gases

Question 6

difference between ionic and molecular

Answer 6

ionic- metal-nonmetal

molecular- nonmetal-nonmetal

Question 7

rules for naming ionic compounds

Answer 7

full metal + base of nonmetal + ide

Question 8

rules for naming molecular compounds

Answer 8

keep first element then + base of 2nd element + ide
add prefixes to show how many
H2O- dihydrogen monoxide

Question 9

empirical formula

Answer 9

is the simplest formula for a compound

Question 10

molecular formula

Answer 10

formula giving the number of atoms of each of the elements present in one molecule of a specific compound.

Question 11

determine empirical formula from experimental data

Answer 11

convert g to moles

divide by smallest mole value

Question 12

molecular formula from empirical formula and molar mass

Answer 12

percent of mass

use to find actual formula

Question 13

molar mass

Answer 13

The mass in grams of one mole of atoms of an element;numerically equivalent to the atomic mass of the element in amu.