WorksheetsChem Midterm Review
Total questions: 20
Worksheet time: 19mins
What type of reaction is Pb(NO3)2 + 2KI → 2KNO3 + PbI2
Single replacement
Combustion
Synthesis
Double Replacement
The coefficients to balance this equation are: __C2H5OH + __O2 → __CO2+ __H2O
1,3,2,2
2,3,2,1
1,3,2,3
1,3,1,3
The products of a combustion reaction will always include:
nitrogen dioxide and oxygen
carbon dioxide and water
hydrocarbon and water
carbon dioxide and oxygen
This type of matter has constant volume, flows to conform to the shape of it's conatiner, cannot be compressed
Solid
Gas
Liquid
Bose-Einstein condensate
Is 1s22s22p63s23p64s23d104p5 the full electron configuration for Bromine?
True
False
What is the correct number of sig fig's for 104,208.30
5
6
7
8
Electroneagtivity is the minimum amount of energy required to remove a valence eletron to form a cation.
True
False
26.790
25.406
24.309
24.605
What are the correct coefficients for:
___Na + ___H2O → ____NaOH + ___H2
1,2,1,2
1,2,2,1
1,1,2,1
2,1,2,1
An example of a Colloid is...
Oil
Water
Milk
The higher the temperature is, the chance of more collisions with enough energy to react becomes due to higher kinetic energy.
False
True
A cataylst is a substance that ________ the rate if a chemical reaction.
Decreases
Increases
The correct number of orbitals for p are ____.
1
3
5
7
Experiments with Cathode Rays. Lead to the discovery of the negatively charged electron. States that there must be subatomic particles found inside all atoms. Model consists of a positive cloud material with electrons randomly distributed throughout.... This describes which model of Atomic theory:
Nuclear Model
Planetary/Bohr Model
Plum Pudding Model
Solid Sphere Model
For which element is this the electron configuration:
1s2 2s2 2p6 3s2 3p6 4s2 3d6
Cl
Mn
Fe
Ar
How many atoms of Oxygen are represented in Al2(SO4)3
3
7
4
12
Oxygen is a Halogen.
True
False
The strongest of the dipole-dipole attractions is the London Dispersion attraction.
True
False
What is the element with Atomic number 30, Mass number 65, # of protons 30, # of neutrons 35, # of electrons 30; and is it an isotope?
Cu: yes
Cu: no
Zn; no
Zn; yes
Which particle does not affect the mass of an atom?
Proton
Neutron
Electron
Nucleus
