Elements,compounds and mixture Flashcards
1
Q
What is Compound?
A
Atom is a chemicaly boundid together.
2
Q
What is Element?
A
Element is a pure substance that cannot be broken down into any other substance.
3
Q
What is Mixture?
A
Mixture is a physical combination of two or more substances that do not produce a chemical reaction.
4
Q
How many Element is in the periodic Table?
A
There total 118 Element in periodic table.
5
Q
What is first Element in periodic table?
A
Hydrogen is first Element.
6
Q
What is Hydrogen?
A
Hydrogen is explosive gas which can burn with a very clear squeaky pop.
7
Q
What is Helium?
A
Helium is different then Hydrogen because it doesn’t take part in chemical reaction and it is use in party ballons because it is lighter them air
