Chemistry Review 2015-2016

Question 1

The electron configuration of 1s22s22p63s23p2 is for which element?

Accepted Answer

Silicon

Question 2

Which element has the highest electronegativity?

Accepted Answer

Fluorine

Question 3

Arrange the units of volume in order from smallest to largest.

Accepted Answer

mL, dL, L

Question 4

What is the molarity of 2.0 moles of sodium chloride in 345 mL of water?

Accepted Answer

5.8 M

Question 5

"Q" in the equation shown represents?

Accepted Answer

Heat (energy)

Question 6

What is the correct formula for beryllium nitrate?

Accepted Answer

Be(NO3)2

Question 7

Which conversion factor would you use to convert from moles to mass in grams?

Accepted Answer

molar mass/moles

Question 8

Is PCl3 polar or nonpolar?

Accepted Answer

Polar

Question 9

The coefficients for the reaction ___H2 + ___O2 --> ___H2O are?

Accepted Answer

2, 1, 2

Question 10

The chemistry term for a reaction that absorbs heat.

Accepted Answer

Endothermic

Question 11

How many protons are in the atom shown?

Accepted Answer

8

Question 12

What is the mass of .05 moles of calcium hydroxide?

Accepted Answer

4 g

Question 13

How does phosphorous become a charged ion?

Accepted Answer

Gain 3 electrons

Question 14

How many significant digits are in 0.00560?

Accepted Answer

3

Question 15

Classify the enthalpy (energy) change in the graph shown.

Accepted Answer

exothermic

Question 16

The correct constants for a gas at STP are?

Accepted Answer

25 °C & 1 atm

Question 17

Which compound is soluble in water?

Accepted Answer

CaCl2

Question 18

Classify the reaction between manganese (II) oxide and fluorine gas?

Accepted Answer

Single Displacement

Question 19

What term is used to describe atoms of the same element but with different masses?

Accepted Answer

Isotope

Question 20

Lewis structures are an illustration of which particles in an atom?

Accepted Answer

Valence electrons

Question 21

Convert 425 K to Celsius degrees.

Accepted Answer

152 °C

Question 22

What is the shape of a compound with 3 "bonding" electron clouds around the central atom?

Accepted Answer

Trigonal planar

Question 23

What is the bond character classification of the compound Hydrogen fluoride (HF)?

Accepted Answer

polar

Question 24

What is the name of NH3?

Accepted Answer

ammonia

Question 25

When doing stoichiometry, quantities of compounds are dependent on knowing __________?

Accepted Answer

Mole ratios

Question 26

What is the atomic mass of water?

Accepted Answer

18.02 amu

Question 27

How many neutrons are in Chlorine-35?

Accepted Answer

18

Question 28

What is the name for the compound of Pb(NO3)2?

Accepted Answer

Lead (II) Nitrate

Question 29

A solution under normal conditions with less than its maximum amount of solute is?

Accepted Answer

unsaturated

Question 30

What is the term used to describe two aqueous solutions reacting to form a solid product?

Accepted Answer

precipitation

Question 31

The reactant always necessary in a combustion reaction is?

Accepted Answer

oxygen (O2)

Question 32

The meaning of the first quantum number in electron configurations is?

Accepted Answer

energy level

Question 33

Arrange the atoms from smallest to largest radius size.

Accepted Answer

Br, As, Ge

Question 34

All atoms want to have electron configurations like which group of elements?

Accepted Answer

Noble gases

Question 35

Which metals in the periodic table must have their charge specified by a roman numeral?

Accepted Answer

transition

Chemistry Review 2015-2016

Questions 35

Chemistry Review 2015-2016

Questions 35