1. Two substances mixed together without any chemical reaction form a:
  1. mixture
  2. compound
  3. atom
  4. element
2. Plant cells have a structure that animal cells do not have, called the:
  1. cytoplasm
  2. membrane
  3. cell wall
  4. nucleus
3. Speed is calculated using the formula:
  1. time ÷ distance
  2. distance ÷ time
  3. distance × time
  4. mass × time
4. The unit used to measure electric current is the:
  1. ampere
  2. watt
  3. ohm
  4. volt
5. Which of these is a physical change?
  1. melting ice
  2. burning wood
  3. rusting iron
  4. baking a cake
You've reached the end of the free preview
The full pack has 56 curriculum-aligned questions with answer key — US$12
Back to all packs