Free Printable CHEMFINALS2021

Worksheets

CHEMFINALS2021

Total questions: 25

Worksheet time: 1hrs 7mins

Name

Class

Date

Which of the following describes a chemical property of an element?

Copper is malleable.

Nonmetals are not shiny.

Sodium reacts violently with water.

Silicon is a poor conductor of electricity.

What is the atomic number for an element with 41 neutrons and a mass number of 80?

121

An unidentified element has many of the same physical and chemical properties as magnesium and strontium but has lower atomic mass than either of these elements. What is the most likely identity of this element?

Beryllium

Sodium

Calcium

Barium

Select the correct electron configuration for Cl.

1s² 2s² 2p⁶ 3s² 3p⁵

1s² 2s² 3s² 3p⁶ 4s² 4p³

1s² 2s² 2p⁶ 4s² 4p⁵

1s² 2s²2p⁶ 3s¹ 3p⁶

Do the following isotopes belong to the same element? Explain.
Aluminum-27
An isotope with 14 protons and 13 neutrons

No because they have different number of neutrons.

Yes because they have the same number of protons.

Yes because they have the same mass number.

No because they have different number of protons.

Which of the following pairs of elements will form an ionic bond?

O and Cl

Ni and N

Sn and Cu

H and C

identify the element with this electron configuration [Ar] 4s² 3d ¹⁰?

When a Cl atom gains an electron, it gets a charge of

-1

What is the correct name for Fe(NO₃)₂?

iron nitrate

iron dinitrate

iron(II) nitrate

iron(I) nitrate

10.

What is the correct formula for ammonium phosphate?

(NH)₃(PO₄)

(NH₄)₂(PO₄)₃

NH₄(PO₄)₃

(NH₄)₃PO₄

11.

What is the charge of the ion that Group V A (15) elements form?

-5

-3

12.

Find the number of moles in 30 grams of H₃PO₄

30 mol H₃PO₄

0.31 mol H₃PO₄

97 mol H₃PO₄

3.26 mol H₃PO₄

13.

How many moles are in 564 grams of Copper?

0.11 mol Cu

25 mol CU

87 mol Copper

8.87mol Cu

14.

2H₂ + O₂ → 2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

4 moles

8 moles

16 moles

2 moles

15.

Balance the following reaction AND identify the

coefficients from the given choices.

CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)

1,2,2,2

1,2,1,1

2,1,1,1

2,1,2,1

16.

Mole ratios are obtained from the

balanced chemical equation

periodic table

molar mass

17.

Balance the equation and identify the sum of the coefficients from the given choices.

-- Al(NO₃)₃ + --- H₂SO₄--> --- Al₂(SO₄)₃ + --- HNO₃

18.

How many moles are in 88 g of propane, C₃H₈.

2.0

16.0

0.051

3,872

19.

What is the name of the most reactive metals?

Alkali

Alkali Earth

Halogens

Noble Gases

20.

What is an ion?

A Charged Atom

A Large Atom

A Small Atom

A Cute Atom

21.

Be (beryllium) forms an ion with a charge of ________.

-1

-2

22.

a negatively charged subatomic particle that orbits the nucleus of an atom

proton

neutron

electron

matter

23.

How many carbons are in C₆H₁₂O₆?

24.

If magnesium binds with oxygen, what compound forms? (use your periodic table)

MgO

Mg₂O

Mg₂O₂

MgO₂

25.

What is the formula for Dihydrogen monoxide?

H₃O₂

H₈O₃

H₂O

HO₂

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CHEMFINALS2021

Total questions: 25

Worksheet time: 1hrs 7mins

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