Atoms, elements and compounds Flashcards
1
Q
what is everything made of?
A
atoms
2
Q
can you see atoms with a microscope?
A
no
3
Q
what are elements?
A
more than one hundred substances that cannot be chemically interconverted or broken down
4
Q
what is made when atoms join together?
A
molecules
5
Q
what is compound?
A
A compound is a substance that contains atoms of two or more different elements, and these atoms are chemically joined together.
6
Q
how many elements are there?
A
118
