Chapter 1
How many milligrams are in 0.500 grams?
500 mg
What charge do neutrons have?
Write in terms of numbers (i.e. -1, +1, 0)
0
Ionic compounds are also called?
Salts
What is the weakest type of bond?
a) dispersion
b) dipole-dipole
c) hydrogen bonding
a
How many moles of oxygen are needed to react with 5.0 moles of ethanol?
C2H6O+3O2 -> 2CO2+3H2O
15
How do you calculate specific gravity?
*Format as density of ___/density of ___
density of substance/density of water
Which component of the atom determines the volume?
Electrons
What is the charge of Cr in Cr2O3?
*Format as the number, then symbol (i.e. 4-)
3+
What bond(s) does ClH2F2 have?
a) only dispersion
b) dispersion and dipole-dipole
c) dispersion, dipole-dipole, and h-bonding
b
What is the molecular mass for glucose? Do not round.
180.1608 amu/moecule
Which temperature scale is absolute?
Kelvin
How many protons does Zinc (Zn) have?
30
Name this compound: MnO2
*Include Roman numerals if needed
Manganese (IV) oxide
What is the molecular bond angle for CBrH3?
109.5
How many grams of Cu are in .25 mol of Cu? Use correct sig figs.
16 g
What is 106 degrees F in Kelvin?
314
What is the max amount of valence electrons for valence shell level 2?
8
Name this polyatomic ion: SO42-
Sulfate
Which element is the most electronegative in group 2A? Please write the symbol.
Be
Balance this equation:
_C7H16+_O2 -> _CO2+_H2O
write answers like this: 1, 2, 3, 4
1, 11, 7, 8
How many milligrams of medicine should I give my child per dose if it says 100 mg a day, q.i.d?
25 mg
How many total metalloids are there and what is their shape?
a) 9, in a stair step shape
b) 7, following the H-7 shape
c) 8, in a stair step shape
c
Name this compound: P7Br10 , then after put an I or C signifying covalent or ionic.
Format: Lithium monoxide, I
Hepaphosphorus decabromide, C
What is the molecular geometry for NF3?
trigonal pyramidal
Given this reaction, which element is reduced?
CH4 (g) +2O2 (g) -> CO2 (g) +2H2O (l)
O