Free Printable 2nd Semester Final Review (2)

1.

Finish the following nuclear equation by solving for X: $Tc_{43}^{99}\ \rightarrow\ X\ +e_{-1}^0$

a)

$Tc_{43}^{99}$

b)

$Tc_{44}^{99}$

c)

$Ru_{43}^{99}$

d)

$Ru_{44}^{99}$

2.

Match the following main types of radiation with its symbol.

a)

$He_2^4$

1.

alpha particle

b)

$e_{-1}^0$

2.

Beta particle

c)

$\gamma_0^0$

3.

Gamma particle

3.

Match the following main types of radiation with what will stop them.

a)

A single sheet of paper

1.

alpha particle

b)

A layer of clothing or by a few millimeters of a substance such as aluminum.

2.

Beta particle

c)

Barriers of lead, concrete, or water

3.

Gamma particle

4.

What element is represented by the electron configuration of:

$1s^22s^22p^63s^23p^64s^1$

a)

Potassium

b)

Gallium

c)

Boron

d)

Scandium

5.

Finish the following nuclear equation by solving for X: $U_{92}^{238}\ \rightarrow\ Th_{90}^{234}\ +\chi$

a)

Beta particle

b)

Alpha particle

c)

Gamma particle

6.

Convert $2.5\ x\ 10^{31}$ molecules of $H_2SO_4$ into moles.

7.

what is the number .0000809 written in scientific notation?

a)

8.09

b)

$8\times10^4$

c)

$809\times10^7$

d)

$8.09\times10^{-5}$

8.

What is the number 70500000 in scientific notation?

a)

705

b)

7.05

c)

$7.05\times10^7$

d)

$7.05\times10^{-5}$

9.

Aluminum and Oxygen combine to form which of the following compounds

a)

$AlO$

b)

$Al_2O_3$

c)

$Al_3O_2$

d)

$Al_7O_5$

10.

What is the chemical formula for Calcium Bromide?

a)

$CaBr$

b)

$CaBr_2$

c)

$Ca_2Br$

d)

$Ca_2Br_7$

11.

Match the following compounds containing polyatomic ions.

a)

$NaNO_3$

1.

Sodium Nitrate

b)

$NaNO_2$

2.

Sodium Nitrite

c)

$K_3PO_4$

3.

Potassium Phosphate

d)

$K_3PO_3$

4.

Potassium Phosphite

12.

Significant figures: Round off this measurement to 3 significant figures. 35.27g

a)

35.0g

b)

35.2g

c)

35.3g

d)

35.30g

13.

Dimensional Analysis (AKA: Unit Conversion): How many cm is equal to 1450 m?

a)

$1.45\times10^5$

b)

$1.45\times10^3$

c)

$1.45\times10^{-5}$

d)

$1.45\times10^{-3}$

14.

Dimensional Analysis: How many centimeters are there in 324 feet? (3 significant figures)

a)

$9.9\times10^3cm$

b)

$9875.5cm$

c)

$9880cm$

d)

10.6cm

15.

1s2 , 2s2, 2p2 is the electron configuration for what element?

a)

Carbon

b)

Sodium

c)

Argon

d)

Cobalt

16.

[Ne] 3s¹ or 1s² 2s² 2p⁶ 3s¹ is the electron configuration for what element?

a)

Carbon

b)

Sodium

c)

Argon

d)

Cobalt

17.

What is Avogadro's Number?

a)

6.02 x 10²³

b)

- 6.02 10²³

c)

6.02 x 10²²

d)

6,020,000,000,000

18.

What is the molar mass (NH₄)₂CO₃?

a)

43.03 g/mol

b)

78.06 g/mol

c)

94.09 g/mol

d)

96.11 g/mol

19.

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

a)

3mol Mg / 2 mol Fe

b)

2 mol Mg/ 3 mol Fe

c)

1 mol Fe/ 2 mol Fe

d)

3 mol MgO / 2 mol Fe

20.

How do we get mass from moles?

a)

multiply by avogadro's number

b)

multiply by molar mass

c)

divide by avogadro's number

d)

divide by molar mass

21.

The limiting reactant is the reactant that __________ .

a)

slows down the reaction

b)

used up first

c)

left over at the end of reaction

d)

controls the speed of the reaction

22.

How many water molecules are in 5.2 moles of water?

a)

6.02 x 10²³

b)

5.2

c)

3.1304 x 10²⁴

d)

8.638 x 10^-24

23.

A student inflates a balloon with helium then places it in the freezer. The student should expect

a)

the balloon's volume to increase

b)

the balloon's volume to decrease

c)

the balloon's moles to increase

d)

the balloon's moles to decrease

24.

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

a)

7.18 L

b)

7.81 L

c)

4.63 L

d)

4.36 L

2nd Semester Final Review (2)

Total questions: 24

Worksheet time: 35mins

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