Elements
Periodic Table 1
atoms
Vocabulary
100
Most of the elements are metals or non-metals?
Metals
100
What did the Russian scientist, Dimitri Mendeleev, set-up?
It is used in Chemistry classes?
Periodic table
100
The positive (+) part of an atom is called the ___________
Proton
200
How many elements can scientist find on the earth? (Not made in lab)
90
200
What is the chemical name for this element?
Oxygen
200
What charge is in an electron?
positive (+)
negative (-)
no charge ( 0 )
negative (-)
200
What are 3 ways to observe something?
look closely
smell
feel
300
What is the smallest part of everything?
atom
300
What is the atomic number for this element?
8
300
What part of the atom has no charge (0) ?
neutron
300
What is a mixture?
Mix 2 or more chemicals together
400
Na (sodium) + Cl (Chlorine) = ??
salt
NaCl
400
What is the symbol for this element?
O
500
What do you call something made of only 1 atom?
Element
500
What is the periodic table?
A chart of all chemical elements, organized from small to large
500
What happens in a chemical reaction?
bubbles
