1.2: the atomic world Flashcards
1
Q
what are the building blocks of matter?
A
atoms
2
Q
scientific model
A
description scientists use to represent important features of what they are trying to describe.
able to test the consistency of their observations against various predictions of the models.
3
Q
what is the atomic theory
A
1802 Dalton (john)
- proposed all matter is made up of tiny spherical particles which are invisible and indestructible.
- all elements are made up of one type of atom
- some non metals form covalent network lattices or giant molecules
4
Q
monoatomic
A
- exist as individual atoms
- noble gases
5
Q
compounds
A
different types of atoms could combine to form new substances
6
Q
how to determine whether a substance is pure or a compound
A
must determine if substance can be broken down to simpler form or not (example heating)
