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Sig. Fig. / Precision & Accuracy

100

Which of the following is used to indicate precision?

1. Standard deviation

2. Percent error

3. Percent relative deviation

4. The mean

5. 
   

Percent relative deviation

200

Which of the following contains 5 significant figures?

1. 5.3222*10^-3 km

2. 9.8792 m

3. 10000. mm

4. All of the above

All of the above

300

⁴Which of the following is the shortest distance?

1. 5.21 km

2. 4.98*10³ m 

3. 1.24*10¹⁹ nm

4. 1.87*10⁴ mm

1.87*10⁴ mm

400

Which of the following is the most precise weight?

1. 154.098 g

2. 42 kg

3. 100 mg

4. 1.0057*10⁵ g

1.0057*10⁵ g

500

If the laboratory experiment is supposed to produce 15.24 g of 02, which of the following is most accurate?

1. 1.54 kg

2. 1.24*10³ mg

3. 1.49*10⁴ mg

4. 2.11*10^-2 kg

1.49*10⁴ mg

Isotopes, Protons, Neutrons, Electrons

100

Identify the element that has a mass number of 74 and 33 protons.

1. Re

2. As

3. Ag

4. Hs

As

200

Which of the following is NOT a characteristic of isotopes?

1. Same number of protons

2. Same number of electrons

3. Same number of neutrons

4. Different mass numbers

Same number of neutrons

300

Which of the following elements are isoelectronic?

1. The noble gases

2. H+, H, and H-

3. Li+, O-, and F

4. Mg2+, Na+, and F-

Mg2+, Na+, and F-

400

Which of the following pairs of elements are isotopes?

1. ⁴⁰₂₀Ca and ⁴⁰₁₈Ne

2. ¹₁H and ⁴₂He

3. ¹⁶₈O and ¹⁸₈O

4. ⁴₂He and ⁴₂He

¹⁶₈O and ¹⁸₈O

500

How many valence electrons does ¹³₆C have?

1. 6

2. 4

3. 7

4. 13

4

Photons, Electronic Configurations, Orbitals, Periodic Trends

100

Which of the following elements has the largest radius?

1. Na

2. K

3. Mg

4. Ca

K

200

The wavelength of red light is 724 nm. What is the energy of a photon of red light?

1. 2.75*10^-19 J

2. 4.14*10¹⁴ Hz

3. 2.74 J

4. 4.14*10¹⁴ J

2.75*10^-19 J

300

Which of the following atoms is most electronegative?

1. O

2. C

3. Si

4. S

O

400

Which of the following best describes the electron configuration of O-?

1. [Ne]

2. [Ne]3s²3p⁴

3. [He]3s²3p⁵

4. [He]2s²2p⁵

[He]2s²2p⁵

500

Which of the following best describes the electron configuration of Ca?

1. [Ar]

2. [Ar]4s²4p¹

3. [Ar]4s²

4. [Ne]3s²

[Ar]4s²

Naming & Formulas

100

What is the appropriate name for the following molecule: H₂SO₄

1. Hydrogen sulfate

2. Hydrosulfuric acid

3. Sulfuric acid

4. Sulfurous acid

Sulfuric acid

200

What is the appropriate name for the following molecule: CH3CH3

1. Dimethane

2. Methane

3. Butane

4. Ethane

Ethane

300

What is the appropriate name for the following molecule: Hg2O

1. Mercury oxide

2. Mercury monoxide

3. Mercury (I) oxide

4. Mercury (II) oxide

Mercury (I) oxide

400

What is the formula of the following molecule: Copper (II) phosphate

1. Cu2PO4

2. CuPO4

3. Cu2(PO4)3

4. Cu3(PO4)2

Cu3(PO4)2

500

What is the appropriate name for the following molecule: ClF3

1. Monochlorine trifluoride

2. Monochlorine trifluorine

3. Chlorine fluoride

4. Chlorine trifluoride

Chlorine trifluoride

Bonding, Polarity, Hybrids

100

Which of the following are ionic molecules?

1. NaCl

2. H2O

3. CH4

4. O2

NaCl

200

Which of the following molecules is not polar?

1. CH₂O

2. CO

3. CH₄

4. HF

CH₄

300

What is the geometry of H₂O?

1. Bent

2. Trigonal Planar

3. Tetrahedral

4. Linear

Bent

400

Which of the following only contains 1 sigma bond?

1. H₂O

2. CH₄

3. CO

4. NaCl

CO

500

What is the hybridization of carbon atom in this molecule?

1. sp

2. sp²

3. sp³

4. sp⁴

sp²