Grade 3 · Science · Challenge
Free Matter & Energy worksheet - version 3
Grade 3 matter & energy practice with original, difficulty-matched questions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Matter & Energy
Grade 3 · Stretch challenge · 8 questions · Version PG-809LOI-PTDS
1.Explain “solution” in your own words.
2.Explain “exothermic process” in your own words.
3.Explain “density” in your own words.
4.Explain “endothermic process” in your own words.
5.Explain “chemical reaction” in your own words.
6.Explain “mixture” in your own words.
7.Explain “thermal equilibrium” in your own words.
8.Explain “conservation of energy” in your own words.
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 3
- Explain “solution” in your own words.a uniform mixture in which one substance dissolves in another
- Explain “exothermic process” in your own words.a process that releases energy to its surroundings
- Explain “density” in your own words.mass per unit volume
- Explain “endothermic process” in your own words.a process that absorbs energy from its surroundings
- Explain “chemical reaction” in your own words.a process that forms new substances
- Explain “mixture” in your own words.two or more substances physically combined
- Explain “thermal equilibrium” in your own words.a state in which objects have the same temperature
- Explain “conservation of energy” in your own words.energy changes form but is not created or destroyed
Worked example
Track matter and energy before and after a change.
Common mistake
Assuming matter disappears when it changes form.
Helpful hint
Identify the system and follow what enters, leaves, or transforms.