Skip to content
Back to quiz
6. What is an isotope ?
- non
- Atomic number
- Atomic number and mass number
- Mass number
7. What's in an animal cell ?
- nucleus, mitochondria, cell wall, cytoplasm
- nucleus, cytoplasm, cell membrane, mitochondria, ribosomes
- cell wall, nucleus, ribosomes, cytoplasm
8. What is an ion ?
- An atom or molecule with an electric charge due to the loss or gain of one or more electron
- An atom or molecule with no electric charge due to the loss or gain of one or more electron
9. What is an alloy ?
- Is a mixture of two elements
- Is one element
- Is a mixture of three elements
10. How can you tell a chemical reaction is taking place ?
- All of them
- change in colour
- Smell
- Temperature