Unit B section 2 Flashcards
1
Q
What were Alchemists
A
Magician scientists
2
Q
Where did the first chemists live?
A
Middle East
3
Q
How is steel formed?
A
Iron with carbon
5
Q
where was the word: ‘chemistry’ derived
A
Khemeia
6
Q
Define Atomos
A
Indivisible
7
Q
who discovered a subatomic particle?
A
J.J Thomson
8
Q
define brittle
A
breaks easily
9
Q
who discovered how to extract iron from rocks?
A
Hittites
10
Q
What does khemia mean
A
Juice of plant
10
Q
Greek philosopher who discovered ‘atomos’
A
Democritus
11
Q
The elements are arranged in order of increasing________
A
atomic mass
12
Q
define atomic mass
A
mass of one atom of an element
13
Q
how is atomic mass measured
A
atomic mass unit (amu)
14
Q
what are the horizontal rows in the periodic table?
A
period
15
Q
what are vertical lines in the periodic table
A
Group/family of elements
