Periodic table Flashcards
(8 cards)
1
Q
What is a mixture
A
Elements that are mixed but can be separated
2
Q
What is a compound
A
Elements that are chemically bonded together.
3
Q
What is an element
A
a single element
4
Q
What is a pure substance
A
something that is only one type of itself, there is no different things.
5
Q
How many elements are there
A
118
6
Q
What is an atom made of
A
a nucleus made of electrons, neutrons and protons
7
Q
how to find the number of protons in the nucleus
A
the atomic number
8
Q
Is each element made of one atom yes/no
A
yes
