Atoms
The positively charged particle
proton
how many electrons can be put on the first energy level (inner shell)?
2
How are the atoms arranged on the periodic table?
in order of increasing atomic number
an arrangement of the elements by increasing atomic number and by changes in physical and chemical properties.
the periodic table
If you have it, you want to share it. If you share it, you don't have it. What is it?
A secret
Neutron is _______ charged
neutral / uncharged
What two particles make up an atom's nucleus?
proton and neutron
What are Group 1 elements called?
Alkali metals
Na on the periodic table
Sodium
How many of each animal did Moses take on the ark?
Moses didnt make the ark, Noah did.
In an atom, which has the least mass? A: nucleus B: proton C: neutron D: electron
D electron
What is an ion?
A charged element
What is: Mg
Magnesium
a vertical column of elements on the periodic table
group
If you were in a dark room with a candle, a woodstove, a match and a gas lamp which do you light first?
The match
What do we use to determine the number of protons plus the number of neutrons in the nucleus of an atom?
Atomic mass
Objects are pulled towards one another by _____ force
Gravitational
What are Group 7 elements called?
Hallogens
a horizontal row of elements on the periodic table
period
The more it dries, the wetter it gets. What is it?
A towel
Describe the difference between atomic number and mass number
The atomic number is the number of proton in an atom. The Mass number is the sum of the number of protons and neutrons in an atom of a particular isotope
Electrons were discovered by:
Thomson
Chlorine has atomic number 17 and mass number 35. How many neutrons are in it's nucleus?
18
The number of_______________= the number of electrons in a neutral atom
protons
How can you leave a room with two legs and return with six legs?
Come back with a chair