Atoms Flashcards
1
Q
How many different substances are catalogued by scientists?
A
millions
2
Q
What are all substances made of?
A
atoms
3
Q
How many different types of atom are found naturally on Earth?
A
100 different types, which can combine in a variety of different ways, giving all those different substances.
4
Q
What are a relatively small number of substances made up of?
A
Only one type of atom, (elements.)
5
Q
What is the smallest part of an element that can exist?
A
An atom
6
Q
Approximately how many different elements are there?
A
about 100 different elements.
