1. Chem Final Review sample question

2. Chemistry Final Info Given: Periodic table
Polyatomic ion names and formulas table, percent error formula
Bring: calculator, pencil, eraser, something do do (non electronic) for when the final is over
Notecard:
You can use one, hand written, 3x5 notecard that you provide for the test. It must be written by you with whatever content you want
It will be turned in after the test.

3. Things that are hard to remember (maybe put on your notecard?)
Diatomic elements:
VSEPR diagrams: linear, bent, trigonal planar, etc
Prefixes for naming covalent compounds
Rules for naming ionic compounds
Conversion? Milli, centi, kilo, etc (staircase?)
Formula for density
Diatomic molecules
Notecard:
You can use one, hand written, 3x5 notecard that you provide for the test. It must be written by you with whatever content you want
It will be turned in after the test.

4. How can you tell the difference between covalent bonds and Ionic bonds?

5. Oxidation numbers

6. Nitrogen is located in which Group?6 9 12 15

7. . All of the following are steps in the scientific method EXCEPT
observing and recording data.
forming a hypothesis.
discarding data inconsistent with the hypothesis.
developing a model.

8. . A volume of 1 cubic centimeter is equivalent to
1 milliliter.
1 gram.
1 liter.
101 cubic decimeters.

9. All of the following are SI units for density EXCEPT
g/mL.
kg/m3.
g/cm3.
g/m2. Density = mass/volume

10. 1. Tell if the following describes ionic or covalent bonds:
More conductive
Crystal solid
Solid, liquid, or gas
2 nonmetals
Sharing electrons
Higher melting and boiling points
Strongest

11. 2. Given the symbol
What is the:
Atomic number
Mass number
Number of protons
Number of neutrons
Number of electrons
Average atomic mass

12. Atomic number 6 Mass number 13

13. Average Atomic mass

14. 3. The mass of a neutron is _____amu, which is the same mass of another subatomic particle, the ________. Both are found in the _________ of an atom
1, proton, nucleus

15. Isotopes are atoms of the same element that have different
(choose all that apply)
principal chemical properties
numbers of protons
Masses
numbers of electrons
Number of neutrons ç

16. 1. What is the formula for density?
2. What is the density of 35.0 g of matter whose volume is 5.0 cm3? a g/cm3 c. 175 g/cm3 b. 7.0 g/cm3 d g/cm3

17. The dimensions of a rectangular solid are measured to be 1. 27 cm, 1
The dimensions of a rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should, using correct significant figures, be recorded as
4.128 cm3
4.13 cm3.
4.12 cm3.
4.1 cm3.

18. Expressed in scientific notation, 1. 0.0930 m is
93 x 10–3 m.
9.30 x 10–2 m.
9.3 x 10–3 m.
9.30 x 102 m. m
9.3x105
9.3x10-5
9.3x106
9.3x10-6

19. 1. Precision pertains to all of the following except
a. reproducibility of measurements.
b. agreement among numerical values.
c. sameness of measurements.
d. closeness of a measurement to an accepted value.
2. 3 measurements were taken; 1.81, 1.82, 1.81, and the accepted value is These measurements have good:
Accuracy
Precision
Both

20. The mass of a neutron is
about the same as that of a proton.
double that of a proton.
about the same as that of an electron.
double that of an electron.

21. 1. Transition elements are found in which of the following group(s) of the periodic table?
Groups 1 and 2
d. Group 18
2. Write for formula for Nickel II fluoride
3. Write the name for CuCl4
NiF2
Copper (IV) Chloride

23. 1. Bohr’s theory helped explain why
a. electrons have negative charge.
b. most of the mass of the atom is in the nucleus.
c. excited hydrogen gas gives off certain colors of light.
d. atoms combine to form molecules.
2. Most of the volume of an atom is occupied by the
nucleus.
electron cloud.
Nuclides.
protons.

24. 2. What are the exceptions to the octet rule?
1. In many compounds, atoms of main-group elements form ions so that the number of electrons in the outermost energy levels of each ion is 2 8 6
d. 10
2. What are the exceptions to the octet rule?
H, He- full with 2 electrons

25. When the light from excited atoms of an element is passed through a prism, the distinct colored lines produced are called a. ground states. c. line-emission spectra. b. excited states. d. electromagnetic spectra.

26. 1. A compound that has the same number of positive and negative charges is said to be
cationic.
neutral.
anionic.
isoelectronic.
2. What is the ratio of cations to anions in a compound composed of sodium ions, Na+, and carbonate ions, ?
a. 1 to 1
b. 2 to 1
c. 1 to 2
d. 3 to 1

27. 1. What is the formula for the compound formed by lead(II) ions and chromate ions, CrO42–?
PbCrO4
Pb2(CrO4)3
Pb2CrO4
d. Pb(CrO4)2
Name the compound CuO.
Copper(I) carbonate
cuprous carbide
cupric trioxycarbide
copper(II) carbonate

28. 1. A polar covalent bond is most likely to form between two elements that
Have the same electronegativity
Have different electronegativity
Are symmetrical
Both (a) and (c)
2. Which is nonpolar?
a. CO2
b. Cl2
c. HCl