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Drill 20 1/14/13

• List 3 characteristics of ionic compounds.

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Answer

• High melting point, high solubility, electrolyte

Midterm Review

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Scientific Investigation

Chemical Formulas

Atomic Structure and Periodicity

Miscellaneous

100 100 100 100

200 200 200 200

300 300 300 300

400 400 400 400

500 500 500 500

600 600 600 600

700 700 700 700

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Scientific Investigation 100

Which of the following is a chemical change?

A – melting wax

B – boiling water

C – painting black

D – burning wood

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Scientific Investigation 200 • Which of these is not an SI base

unit?• A - Kg • B - s• C - L• D - K

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Scientific Investigation 300

• What is the name of the lab equipment shown?

• F - Watch glass• G - Crucible • H - Beaker• J - Evaporating dish

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Scientific Investigation 400

Which of the following is a homogenous mixture?

A – carbon dioxide

B – air

C – a block of lead

D – ice water

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Scientific Investigation 500

• How many liters are equivalent to five milliliters?

F - 0.005 L

G - 0.05 L

H - 500 L

J - 5000 L

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Scientific Investigation 600

Trial Measured Volume (L)

1 5.20

2 5.20

3 5.19

4 5.20

5 5.20

The following data was collected. The volume of the gas is known to be 2.20 L.This data reflects —

A - low precision and low accuracy

B - low precision and high accuracy

C - low accuracy and high precision

D - high accuracy and high precision

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Scientific Investigation 700

• Which of the following best describes why an experiment should be repeated?

A - To organize the data

B - To produce a variety of results

C - To include another variable

D - To verify the observed results

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Chemical Formulas - 100

• The correct name for P2O5 is —

F - phosphorus (V) pentoxide

G - phosphorus oxide

H - phosphorus (II) oxide

J - diphosphorus pentoxide

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Chemical Formulas - 200

• The correct formula for copper (I)

bromide is —

A - CuBr

B - CuBr2

C - Cu2Br

D - Cu2Br3

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Chemical Formulas - 300

• What type of bonds are present in (NH4)2S?

A – Ionic

B – Covalent

C – Ionic & Covalent

D – There are no bonds

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Chemical Formulas - 400

• What property does CF4 most likely not have?

A – High boiling point

B – Soft and brittle

C – Low conductivity

D – Sharing of electrons

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Chemical Formulas - 500

• How many atoms does (NH4)2SO4 have?

A - 12

B - 18

C - 15

D - 10

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Chemical Formulas 600

• What is the shape of CH4?A – linearB – trigonal planarC – tetrahedral D – pyramidal

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Chemical Formulas - 700

• The correct name for PbSO3 is —

A – Lead Sulfite

B – Lead (II) Sulfite

C – Lead (IV) Sulfate

D – Lead Sulfur Trioxide

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Atomic Structure and Periodicity - 100

• How many valence electrons does a

neutral atom of silicon have?

A - 3

B - 4

C - 5

D - 6

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Atomic Structure and Periodicity - 200

• A scientist has found the following isotope of oxygen:19 8

How many neutrons are present in this isotope?

A - 8B - 11 C - 19D - 27

O

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Atomic Structure and Periodicity - 300

• An atomic spectra can be used to determine the —

F - composition of stars

G - depth of the ocean

H - distance between two mountains

J - malignancy of a tumor

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Atomic Structure and Periodicity - 400

• The net charge on an aluminum ion is 3+ because there are —

F - 10 protons and 13 electrons in the atom

G - 13 protons and 10 neutrons in the nucleus

H - 10 neutrons and 13 electrons in the atom

J - 13 protons and 10 electrons in the atom

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Atomic Structure and Periodicity - 500

Two atoms have the same electonegativity. This means when the two atoms bond, the resulting bond is —

A - ionicB – metallicC - nonpolar covalentD – polar covalent

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Atomic Structure and Periodicity - 600

• What is the main similarity among

elements in group 2?

F - Atomic radius

G - Chemical properties

H - Mass number

J - Boiling point

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Atomic Structure and Periodicity - 700

• Which of the following requires the least energy to remove an electron?

A - Br

B - K

C - Al

D - Na

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Misc. - 100

• Compared to chemical reactions, nuclear reaction produce changes in the -

A – electron structure and far more en.

B – electron structure and less energy

C – nucleus and far more energy

D – nucleus and less energy

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Misc. - 200

Convert Convert 2.8 x 105 centimeters (cm) to kilometers (km).

A – 20.8 km

B – 2.8 km

C – 0.28 km

D – 0.028 km

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Misc - 300

• The elements that are characterized as being highly reactive —

A - alkali metals

B - alkaline earth metals

C - halogens

D - lanthanoids

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Misc. - 400

• Which of the following best describes

sublimation?

F - A solid melting to a liquid

G - A solid melting to a liquid, which then evaporates

H - The movement of gaseous particles so that they fill the space they occupy

J - A solid forming a gas

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Misc - 500

Who determined that an atom is made up of mostly empty space using gold foil?

A - Bohr

B - Millikan

C - Moseley

D - Rutherford

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Misc. - 600

Dumbbell shaped orbital are called:

A – s-orbitals

B – p-orbitals

C – d-orbitals

D – f-orbitals

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Misc. - 700

What element is represented by [He]2s22p6 ?

A – Ne

B – Ca

C – Ar

D – Li