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Grade 10 Chemical Reactions Worksheet with Answers
Grade 10 (US) · Year 11 (UK) · Class 10 (India) · Chemistry
Unit 3: Chemical ReactionsReaction TypesNGSS HS-PS1-4
Reactants and products, types of chemical reactions, and signs that a reaction has happened. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comChemical Reactions
Grade 10 · Chemistry
Name
Class
Date
Learning goal: Reaction Types · NGSS HS-PS1-4
Directions: This worksheet has 2 parts. Read the instructions at the start of each part.
Is melting ice a physical change or a chemical change?
Answer: a physical change
RememberTypes of reactions
Match each clue to the right word. Write the letter in the box.
- 1Is baking a cake a physical change or a chemical change?
- 2What does an arrow mean in a chemical equation?
- 3What substance speeds up a reaction without being used up?
- 4What do we call a reaction that absorbs heat?
- 5What do we call a reaction that releases heat?
- 6What gas is produced when vinegar reacts with baking soda?
- ACatalyst
- B"produces" or "yields"
- CCarbon dioxide
- DEndothermic
- EExothermic
- FChemical change
Answer each question. Use full sentences where you can.
- 7
Is burning wood exothermic or endothermic?
ExothermicEndothermic - 8
Name two ways to make a reaction go faster.
- 9
What law says matter can't be created or destroyed in a reaction?
- 10
What type of reaction happens when an acid and a base react to form salt and water?
- 11
What do we call the new substances formed by a chemical reaction?
- 12
Name one common sign that a chemical reaction has happened.
★ Challenge corner for fast finishers
Why does your breath make fog on a cold window?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/10/chemistry_reactions
Answer key — Chemical Reactions (Grade 10)
- 1.F — a chemical change
- 2.B — "produces" or "yields"
- 3.A — a catalyst
- 4.D — endothermic
- 5.E — exothermic
- 6.C — carbon dioxide
- 7.exothermic
- 8.raise the temperature, increase concentration, use smaller pieces (more surface area), or add a catalyst (any two)
- 9.the law of conservation of mass
- 10.a neutralization reaction
- 11.products
- 12.bubbles (gas), color change, temperature change, light, or a new smell (any one)
- ★water vapor in your breath condenses on the cold glass
Answer key (click to show)
- 1.F — a chemical change
- 2.B — "produces" or "yields"
- 3.A — a catalyst
- 4.D — endothermic
- 5.E — exothermic
- 6.C — carbon dioxide
- 7.exothermic
- 8.raise the temperature, increase concentration, use smaller pieces (more surface area), or add a catalyst (any two)
- 9.the law of conservation of mass
- 10.a neutralization reaction
- 11.products
- 12.bubbles (gas), color change, temperature change, light, or a new smell (any one)
- ★water vapor in your breath condenses on the cold glass (challenge corner)
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