Podcast
Questions and Answers
Which is the most fundamental unit of matter?
Which is the most fundamental unit of matter?
- Black holes
- Sand particles
- Molecules
- Atoms (correct)
What is the size of an atom?
What is the size of an atom?
- 100 to 500 nanometers
- 10 to 50 nanometers
- 0.1 to 0.5 nanometers (correct)
- 1 to 5 nanometers
What are the compounds formed in a chemical reaction called?
What are the compounds formed in a chemical reaction called?
- Atoms
- Molecules
- Reactants
- Products (correct)
Which law states that matter can neither be created nor destroyed in a chemical reaction?
Which law states that matter can neither be created nor destroyed in a chemical reaction?
What is a pure chemical compound containing the same elements combined together in a fixed proportion called?
What is a pure chemical compound containing the same elements combined together in a fixed proportion called?