اسئلة عشوائية التشابتر الاول Flashcards
1
Q
Types of mixtures
A
Homogeneous mixture and heterogeneous mixture
2
Q
How many elements have been identified?
A
114 elements
3
Q
How many elements are naturally on earth?
A
82 elements
4
Q
How many elements are created by scientists?
A
32 elements
5
Q
The TWO types of matter
A
Mixtures and pure substances
6
Q
The two types of substances
A
Compounds and elements
7
Q
Compound separated by chemical methods give us
A
Elements
8
Q
The THREE states of matter
A
Solid, liquid, gas
9
Q
From GAS to LIQUID
A
condensation
10
Q
From LIQUID to GAS
A
vaporization
11
Q
From LIQUID to SOLID
A
Freezing
12
Q
From SOLID to LIQUID
A
melting
13
Q
The TWO types of change
A
Physical change and chemical change
14
Q
What forms when hydrogen burns in air?
A
Water
15
Q
Is it chemical change or physical change?
Snow in winter
A
Physical change
