Free Grade 11 Chemistry Worksheets with Answers

Grade 11 Electron Shells & Valence Electrons

HS-PS1-1

Arranging electrons in shells for the first 20 elements and finding valence electrons.

e.g. How many valence electrons does silicon (Si, atomic number 14) have?

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Grade 11 Periodic Table Groups & Trends

HS-PS1-2

Groups, periods and trends in atomic radius, ionization energy and electronegativity.

e.g. Does atomic radius increase or decrease going down a group?

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Grade 11 Ionic, Covalent & Metallic Bonds

HS-PS1-3

How atoms bond by transferring or sharing electrons, and the properties that result.

e.g. What holds atoms together in a metal?

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Grade 11 Balancing Chemical Equations

HS-PS1-7

Using coefficients to balance chemical equations so atoms are conserved.

e.g. Balance the equation: CH₄ + O₂ → CO₂ + H₂O

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Grade 11 Moles & Molar Mass

HS-PS1-7

Calculating molar mass and converting between grams and moles.

e.g. What is the mass of 5 mol of CO₂? (C = 12, O = 16)

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Grade 11 Solution Concentration (Molarity)

HS-PS1-5

Calculating molarity and how much solute is needed to make a solution.

e.g. How many moles of solute are in 1 L of a 0.25 M solution?

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Grade 11 Types of Chemical Reactions

HS-PS1-2

Synthesis, decomposition, single and double replacement and combustion reactions.

e.g. Reaction type? 2Na + Cl₂ → 2NaCl

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Grade 11 Chemical Reactions

HS-PS1-4

Reactants and products, types of chemical reactions, and signs that a reaction has happened.

e.g. What do we call a reaction that absorbs heat?

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Grade 11 Acids, Bases & pH

HS-PS1-6

The pH scale, properties of acids and bases, neutralization and calculating pH.

e.g. What do an acid and a base make when they neutralize?

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Grade 11 Gas Laws

HS-PS3-2

Boyle's and Charles's laws for how gas pressure, volume and temperature are related.

e.g. A gas has a volume of 2 L at 200 K. At constant pressure it is heated to 400 K. What is its new volume?

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Grade 11 Radioactivity & Half-Life

HS-PS1-8

Calculating how much of a radioactive sample remains, and dating with half-lives.

e.g. A 160 g sample has a half-life of 5730 years. How much remains after 5730 years?

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Grade 11 Challenge: Think Like a Scientist

Challenge

Surprising questions and thought experiments that test real scientific reasoning.

e.g. Why does a metal ship float when a metal nail sinks?

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