1.1 Elements and Atoms Flashcards
1
Q
Every substance in our world is made up from
A
chemical elements
2
Q
The chemical elements cannot be broken down into further molecules by
A
chemical means
3
Q
A few elements are found ______________ in nature while most are found ___________________
A
on their own ……..found in combination with other elements as compounds
4
Q
Define element
A
A substance containing only one type of atom
5
Q
Define atom
A
The smallest part of an element that can take part in a chemical change
6
Q
The diameter of a hydrogen atom is
A
10^-10m
7
Q
A
8
Q
A single hydrogen atom weighs
A
1.67x10^-27
