wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chemistry 7 Beginning of the year Quiz

Total questions: 100

Worksheet time: 50mins

Name
Class
Date
1.

Burning wood is a (a)   .

Choose from the below words

physical change.

physical property.

chemical change.

chemical property.

2.

Which one is a physical property?

a)

Combustion

b)

Density

c)

Reacting with an acid

d)

Exploding fireworks

3.

Which one is the CORRECT combination of elements and charges?

a)

Ar⁻¹

b)

Mg⁻²

c)

O⁻²

d)

p⁺⁵

4.

7. A. Oxygen (O), Halogen B. Lawrencium (Lr), Lanthanide C. Lithium (Li), Alkaline Earth Metal D. Silicon (Si), Metalloid

a)

A. Oxygen (O), Halogen

b)

B. Lawrencium (Lr), Lanthanide

c)

C. Lithium (Li), Alkaline Earth Metal

d)

D. Silicon (Si), Metalloid

5.

Which element is in the second period and the fifth main group on the periodic table of elements?

a)

Nitrogen

b)

Strontium

c)

Vanadium

d)

Phosphorus

6.

This is the substance that you end with in a chemical reaction and is usually on the right side of an equation.

a)

Reactant

b)

Product

c)

Molar Mass

d)

Stoichiometric Ratio

7.

How many molecules are present in 22 moles of CO₂?

a)

44 molecules

b)

968 molecules

8.

The charged particle that is formed by the loss of an electron is called ________.

a)

an anion or a positive ion.

b)

an anion or a negative ion.

c)

a cation or a negative ion.

d)

a cation or a positive ion.

9.

What is the formula for dinitrogen tetraoxide?

a)

N2O5

b)

N2O4

c)

(NO3)2O5

d)

(NO3)2(OH)4

10.

What is the name of C3N2?

a)

Tricalcium dinitrogen

b)

Calcium nitride

c)

Carbon nitride

d)

Carbon nitrogen

11.

What is the formula of ammonium chloride?

a)

NH4Cl

b)

NH2Cl2

c)

AmCl

d)

Am2Cl2

12.

The following equation is a (a)   .

Choose from the below words

synthesis reaction.

physical change.

combustion reaction.

decomposition reaction.

13.

Which one is a polyatomic ion?

a)

OH-1

b)

S-2

c)

NaCl

d)

Na

14.

21. Which statement is TRUE about ionic bonds?

a)

Ionic bonds involve the transfer of electrons from one atom to another.

b)

Ionic bonds involve the sharing of electrons equally between atoms.

c)

Ionic bonds occur only between nonmetals.

d)

Ionic bonds do not result in charged particles.

15.

Which choice best describes this reaction, N2O5 + H2O → HNO3?

a)

Balanced, Combustion Reaction

b)

Unbalanced, Combustion Reaction

c)

Balanced, Synthesis Reaction

d)

Unbalanced, Synthesis Reaction

16.

How many moles are in 212 g of Na2CO3?

a)

22,472 moles

b)

106.0 moles

c)

4.15 moles

d)

2.00 moles

17.

After balancing the following reaction, what are the coefficients present before each compound?

a)

1, 3, 3

b)

2, 2, 3

c)

1, 1, 1

d)

1, 1, 3

18.

Potassium chloride (KCl) is what type of matter?

a)

Element

b)

Compound

c)

Homogenous mixture

d)

Heterogenous mixture

19.

How many protons does Neon – 21 have?

a)

A. 8

b)

B. 10

c)

C. 11

d)

D. 21

20.

What is the charge of an atom with 16 protons, 17 neutrons, and 18 electrons?

a)

A. 2+

b)

B. 1+

21.

Which of the following compounds has the formula KNO₃?

a)

Potassium nitrate

b)

Potassium nitride

c)

Potassium nitrite

d)

Potassium nitrogen oxide

22.

What is the name for the chemical compound MnO₂?

a)

Manganese oxide

b)

Magnesium oxide

c)

Manganese(II)oxide

d)

Manganese(IV)oxide

23.

Which of the following formulas is barium chloride?

a)

BaCl

b)

BCl₃

c)

BaCl₂

d)

Ba₂Cl

24.

The following is an example of what type of chemical reaction: H₂CO₃ --> H₂O + CO₂

a)

Synthesis

b)

Decomposition

c)

Combustion Reaction

d)

Oxidation-Reduction Reactions

25.

How many grams are in 1.5 moles of water?

a)

0.083 g

b)

18.0 g

c)

27.0 g

d)

32.3 g

26.

Li-7 contains

a)

3 neutrons

b)

4 neutrons

c)

6 neutrons

d)

7 neutrons

27.

Balance the following chemical equation: ___Na + ___H₂O → ___NaOH + ___H₂

a)

2 Na + 2 H₂O → 2 NaOH + 1 H₂

b)

1 Na + 2 H₂O → 2 NaOH + 1 H₂

c)

2 Na + 1 H₂O → 2 NaOH + 2 H₂

d)

2 Na + 2 H₂O → 1 NaOH + 2 H₂

28.

Which of the following is the correct balanced chemical equation?

a)

Na₂ + H₂O₂ → 2NaOH + H₂

b)

2Na + 2H₂O → 2NaOH + __H₂

c)

2Na + H₂O → (NaOH)₂ + H₂

d)

Na+ 2H₂O → NaOH + 2H₂

29.

What are the expected products (beside heat and light) when a hydrocarbon undergoes combustion?

a)

A. A metal oxide

b)

B. Carbon dioxide

c)

C. A metal oxide and carbon dioxide

d)

D. Water and carbon dioxide

30.

What is the name of the following tool?

a)

Erlenmeyer Flask

b)

Volumetric Pipette

c)

Graduated Cylinder

d)

Volumetric Flask

31.

Which of the following is the SI unit that can be used to measure volume?

a)

grams

b)

Liters

c)

Seconds

d)

kilometers

32.

What is the molar mass of BaBr₂?

a)

217.23 g/mol

b)

297.14 g/mol

c)

354.56 g/mol

d)

434.47 g/mol

33.

What is the name of the following covalent compound? N₃O₄

a)

Nitrogen oxide

b)

Nitrogen tetroxide

c)

Trinitrogen tetraoxide

d)

Dinitrogen tetraoxygen

34.

How many moles are in 3.9 grams of Cu₂(SO₄)₃?

a)

1619 mol Cu₂(SO₄)₃

b)

0.00939 mol Cu₂(SO₄)₃

35.

Which of the following is the correct formula for cobalt (II) chloride?

a)

Co₂Cl

b)

CoCl

c)

CoCl₂

d)

Co₂Cl₃

36.

A covalent bond is best described as

a)

the sharing of electrons between atoms.

b)

the transfer of electrons

c)

a bond between a metal and a nonmetal

d)

a bond between a metal and a polyatomic ion

37.

Boiling point, melting point, and density are some of an element’s

a)

Nonreactive properties

b)

Physical properties

c)

chemical properties

d)

pure properties

38.

What is the molar mass of Al(OH)₃?

a)

78 grams/mol

b)

68 grams/mol

c)

46 grams/mol

d)

44 grams/mol

39.

When balanced, the coefficients of each term in the following chemical equation will be: AgNO₃ + _____ FeCl₃ → _____ AgCl + _____ Fe(NO₃)₃

a)

2; 3; 2; 3

b)

1; 1; 1; 1

c)

3; 1; 3; 1

d)

1; 3; 3; 1

40.

What coefficients should be used to balance this chemical reaction? __ C₃H₈ + __ O₂ → __ H₂O + __ CO₂

a)

1,1,1,1

b)

1,2,1,3

41.

Which of the following is true for all chemical reactions?

a)

Water is given off.

b)

The total mass of the reactants equals the total mass of the products.

c)

The total mass of the reactants increases.

d)

The total mass of the products is greater than the total mass of the reactants.

42.

Which of the following would be an example of a synthesis reaction?

a)

2 H₂ + O₂ → 2 H₂O

b)

HCl + NaOH → H₂O + NaCl

c)

2 KClO₃ → 2 KCl + 3 O₂

d)

CH₄ + 2 O₂ → 2 H₂O + CO₂

43.

Calcium has (a)   core electrons and (b)   valence electrons.

Choose from the below words

2

8

4

6

44.

What is the chemical name for Ba(NO₃)₂?

a)

Barium Nitrate

b)

Monobarium dinitrate

c)

Barium dinitride

d)

Barium (II) Nitride

45.

What is the chemical name for N₂O₄?

a)

Nitrogen oxide

b)

Nitrogen tetroxide

c)

Dinitrogen tetroxide

d)

Dinitrogen pentoxide

46.

In a(n) (a)   bond, positively charged nuclei are attracted to a negatively charged sea of electrons.

Choose from the below words

Covalent

Ionic

Metallic

47.

Which reason best explains why there needs to be the same number of each element in the reagents as there is in the products?

a)

Conservation of Energy

b)

Conservation of Mass

c)

Avogadro's Law

d)

Stoichiometric Law

48.

To which category does this reaction belong? 2 Fe(s) + O2(g) --> 2 FeO(s)

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

49.

When starting with a hydrocarbon fuel, which reaction type has the chemical products of carbon dioxide CO2 and water H2O?

a)

combustion

b)

decomposition

c)

displacement

d)

metathesis

50.

The number of atoms in a mole of any pure substance is called

a)

atomic number

b)

mass number

c)

Avogadro's number

d)

Isotopic number

51.

What is the molar mass of V3(PO4)2?

a)

311.79 g/mol

b)

247.79 g/mol

c)

342.76 g/mol

d)

495.58 g/mol

52.

How many moles of argon are there in 2.84x10252.84x10^{25} atoms of argon?

a)

2.84

b)

6.02x10236.02x10^23

c)

1.72x10^49

d)

47.2

53.

I have 2.3 mols of LiCl. How many grams of Lithium Chloride do I have?

a)

97.53 grams (2.3 mol x 42.39 g/mol = 97.497 g, rounded to 97.53 g)

b)

42.39 grams

c)

53.30 grams

d)

115.00 grams

54.

Choose the Balanced chemical equation for the following description: Solid Aluminum is reacted with oxygen gas and forms solid aluminum oxide

a)

2Al (s) + 3 O₂ (g) --> Al₂O₃ (s)

b)

4 Al (l) + 3 O₂ (g) --> Al₂O₃ (s)

c)

4Al (s) + 3 O₂ (s) --> 2Al₂O₃ (s)

d)

2Al (s) + O₂ (g) --> Al₂O₃ (s)

55.

How many moles of sodium are in 2.11 x 10²³ atoms of sodium?

a)

2.50 moles

b)

3.50 moles

c)

0.285 mol

d)

1.27 moles

56.

What will be the product of a synthesis reaction when solid potassium combines with oxygen gas?

a)

KO

b)

KO₂

c)

K₂O₂

d)

K₂O

57.

I have 2.3 mols of LiCl. How many grams of Lithium Chloride do I have?

a)

2.3 grams LiCl

b)

42.39 grams LiCl

c)

97.5 grams LiCl

d)

.05 grams LiCl

58.

An ionic bond forms between sodium and chlorine when __________.

a)

a sodium atom loses an electron and a chlorine atom gains an electron.

b)

a sodium atom gains an electron and a chlorine atom loses an electron.

c)

a sodium atom and a chlorine atom share one or more electrons.

d)

a sodium atom and a chlorine atom delocalize one or more electrons

59.

In this reaction, what is H₂O₂? 2 H₂O₂(aq) → 2 H₂O(l) + O₂(g)

(a)  

60.

What type of reaction is this: 2 H2O2(aq) → 2 H2O(l) + O2(g)

a)

synthesis

b)

single displacement

c)

combustion

d)

decomposition

61.

Which type of element is most likely to become anion?

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

All elements can easily become an anion

62.

When element X has a -2 charge, its electron configuration is 1s2 2s2 2p6. How many protons and electrons does X2- have?

a)

8 protons, 10 electrons

b)

6 protons, 8 electrons

c)

10 protons, 8 electrons

d)

10 protons, 10 electrons

63.

What would be the name of the following compound: N3Cl4?

a)

Nitrogen Chloride

b)

Nitrogen tetrachloride

c)

Nitrogen (IV) Chloride

d)

Trinitrogen tetrachloride

64.

How many atoms is one mole of sodium?

a)

23

b)

1

c)

6.022 x 10^23

d)

11

65.

When starting with a hydrocarbon fuel, which reaction type has the chemical products of carbon dioxide CO2 and water H2O?

a)

combustion

b)

decomposition

c)

displacement

66.

A sample of water contains 2.4 x 10^24 molecules. How many moles of water is this?

a)

2.4 moles H2O

b)

6 6x1036 x 10^3 moles H2O

c)

4 moles H2O

d)

18 moles H2O

67.

Which of the following families has the fewest valence electrons?

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

68.

What is the following ionic compound's name: BeCl2

a)

Beryllium Chlorine

b)

Beryllium Dichlorine

c)

Beryllium Chloride

d)

Beryllium Dichloride

69.

Which element below has chemical properties most similar to sodium?

a)

Potassium

b)

Calcium

c)

Aluminum

d)

Hydrogen

70.

Which of the following elements have 10 core electrons?

(a)  

71.

I have 2.3 mols of LiCl. How many grams of Lithium Chloride do I have?

a)

2.3 grams LiCl

b)

42.39 grams LiCl

c)

97.5 grams LiCl

d)

.05 grams LiCl

72.

Which of the following statements is true about the ion

a)

It has 39 protons, 19 electrons and 19 neutrons

b)

It has 19 protons, 39 electrons and 39 neutrons

c)

It has 19 protons, 18 electrons and 20 neutrons

d)

It has 19 protons, 19 electrons and 20 neutrons

73.

What type of bond will form between chromium and phosphorus?

a)

Ionic

b)

Covalent

c)

Metallic

d)

Diatomic

74.

The name of the compound with the formula of Na2SO4 is

a)

disodium monosulfate

b)

disodium sulfur tetroxide

c)

sodium sulfate

d)

sodium(II) sulfate

75.

What is the name of Cu2O3?

a)

Copper oxide

b)

Copper (2) oxide

c)

Copper (III) oxide

d)

Dicopper trioxide

76.

What is the name of the compound CBr4?

a)

Carbon tribromide

b)

Carbon(IV)bromide

c)

Carbon tetrabromide

d)

Carbon bromide

77.

What is the formula for diphosphorus pentoxide?

(a)  

78.

If a substance cannot conduct electricity as a solid, but it can conduct electricity when it is dissolved in water, what kind of bonding did it have before it was dissolved?

a)

Ionic bonding

b)

Polar Covalent bonding

c)

Non-Polar Covalent bonding

d)

Metallic bonding

79.

Choose one option from below that best fits properties of metallic compounds:

a)

Atoms share electrons, and the compounds are usually liquids at room temperature.

b)

Atoms transfer electrons, and compounds are mostly able to dissolve in water.

c)

Atoms form the "sea of electrons" and compounds have high melting points.

d)

Atoms share electrons, and compounds do not conduct electricity.

80.

2Na + Br₂ --> 2NaBr is a balanced chemical equation. If I have 10 grams of Na and produce 25 grams of NaBr, how many grams of Br₂ went into the reaction?

a)

10 grams Br₂

b)

35 grams Br₂

c)

5 grams of Br₂

d)

15 grams of Br₂

81.

The following formula represents what kind of chemical reaction? C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

a)

Synthesis

b)

Decomposition

c)

Combustion

d)

Single displacement

82.

How many molecules are in 73.1 moles of CaCl₂?

a)

4.40 × 10²⁵ molecules

b)

1.21 × 10²² molecules

c)

4.55 × 10²³ molecules

d)

1.26 × 10²² molecules

83.

What is the molar mass of propane (C3H8)?

a)

42 g/mole

b)

43 g/mole

c)

44 g/mole

d)

45 g/mole

84.

How many moles are in 292.2 g of NaCl?

a)

292.2 mol

b)

58.4 mol

c)

5.0 mol

d)

0.20 mol

85.

How many grams are in 2 mol of O2?

a)

2 g

b)

16 g

c)

32 g

d)

64 g

86.

The name of the compound with the chemical formula of N2O is

a)

dinitrogen monoxide

b)

nitrogen dioxide

c)

nitrogen oxide

d)

nitrogen(II) oxide

87.

How many moles are in 4.23x10214.23 x 10^{21} particles of Calcium?

a)

1.75 x 10^{-4} moles of calcium

b)

2.5 x 10^24 moles Calcium

c)

0.281 moles of Calcium

d)

0.00702 moles Calcium

88.

If the equation below were to be balanced, what would be the correct coefficients? ___ C6H14 + ___ O2 → ___ CO2 + ___ H2O

a)

1, 9, 6, 7

b)

1, 19, 6, 7

c)

2, 9, 12, 14

d)

2, 19, 12, 14

89.

Which substance contains both ionic and covalent bonds?

a)

H2O

b)

NaNO3

c)

MgO

d)

NH3

90.

What is the name of BF3?

a)

Boron flouride

b)

Boron (III) flouride

c)

Boron trifluoride

d)

Triboron flouride

91.

The correct name for NH4OH is _______.

a)

ammonium hydrate

b)

ammonium hydroxide

c)

ammonia hydroxide

d)

ammonium (I) hydroxide

92.

A covalent bond is between:

a)

A. A metal and a metal

b)

B. A cation and an anion

c)

C. A metal and a nonmetal

d)

D. A nonmetal and a nonmetal

93.

Using a hydrocarbon fuel, what are the chemical products of a combustion reaction?

a)

carbon dioxide and water

b)

heat and light

c)

salt and water

d)

solid precipitate and an aqueous product

94.

Which is an example of a compound?

a)

Air inside a balloon.

b)

A piece of pizza.

c)

Iron filings/shavings (Fe).

d)

Limestone (CaCO3)

95.

What is the formula of ammonium chloride?

(a)  

96.

The chemical name of MgS is (a)   .

Choose from the below words

Magneside sulfur

Magnesium sulfide

Magneside sulfide

Magnesium sulfur

97.

What kind of bond would magnesium and chlorine form?

a)

Ionic

b)

Metallic

c)

Dipole-dipole

d)

Covalent

98.

This is the substance that you end with in a chemical reaction and is usually on the right side of an equation.

a)

Reactant

b)

Product

c)

Molar Mass

d)

Stoichiometric Ratio

99.

Which one of the following is a balanced chemical equation?

a)

1 S₈ + 1 O₂ → 1 SO₂

b)

8 S₈ + 16 O₂ → 8 SO₂

c)

1 S₈ + 8 O₂ → 1 SO₂

d)

1 S₈ + 8 O₂ → 8 SO₂

100.

Which choice best describes this reaction, HNO₃ → N₂O₅ + H₂O?

a)

Balanced, Desynthesis Reaction

b)

Balanced, Synthesis Reaction

c)

Unbalanced, Decomposition Reaction

d)

Unbalanced, Combustion Reaction

Similar Resources on Wayground

Chem 1 Midterm Study Guide

102 questions

Chem 1 Midterm Study Guide

quiz

Worksheet

•

7th - 10th Grade

Tabla de Valencias

100 questions

Tabla de Valencias

quiz

Worksheet

•

6th - 10th Grade

IIT-JEE & NEET LEVEL-6 (7-T)

100 questions

IIT-JEE & NEET LEVEL-6 (7-T)

quiz

Worksheet

•

7th Grade

IIT-JEE & NEET LEVEL- 2 (7-T)

100 questions

IIT-JEE & NEET LEVEL- 2 (7-T)

quiz

Worksheet

•

7th Grade

IIT-JEE & NEET FOUNDATION LEVEL-15 (7-O)

100 questions

IIT-JEE & NEET FOUNDATION LEVEL-15 (7-O)

quiz

Worksheet

•

7th Grade

TESTE FQ - 29 de maio

99 questions

TESTE FQ - 29 de maio

quiz

Worksheet

•

7th Grade

S2: Chemistry Unit Review

104 questions

S2: Chemistry Unit Review

quiz

Worksheet

•

7th Grade

nomenclatura inorgánica

100 questions

nomenclatura inorgánica

quiz

Worksheet

•

1st - 10th Grade