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Science Lesson 2
Vocabulary
Question | Answer |
---|---|
What is a theory | An idea |
What is aScanning-tunneling microscope | Used to be able to see an atom |
When atoms join they become this | molecule |
Air is made of these two molecules | nitrogen and oxygen |
Water is made of these two elements | hydrogen and oxygen |
What is diffusion | movement |
Who is Democritus | an ancient Greek who said everything is made of particles |
What are atoms | basic building blocks of everything you see |
What are cells made of | atoms |