some question
a few more questions
I bet you can't guess what's in this category....
100
What part of an atom is free to move around from one atom to another?
Electron. NEVER anything else!
100
This is an example of a ____________. These are made from more than one ___________.
MOLECULE, which is made from one or more ATOMS
100
Which of these atomic models correctly expanded the understanding of a nucleus having two different particles - the proton and neutron?
Bohr's model in 1913
200
What do electrons repel?
other electrons (like charges repel!)
200
Which model more correctly shows what electrons are really doing in an atom?
The one on the right (electrons form a cloud as they orbit)
200
name TWO specific things that Rutherford's model did that improved on Thompson's model
His model showed that a nucleus exists inside of an atom, and that electrons move around it
300
what do protons repel?
other protons! (like charges repel)
300
How many atoms are in a molecule?
MORE than 1
300
How did Schoedinger's model improve on Bohr's?
He showed that electrons move around in a cloud, not just regular orbits like planets in Bohr's model
400
What do neutrons repel?
nothing (they have no charge, so they don't repel anything!)
400
How many neutrons are in KNORRium, if KNORRium has 500 protons, 500 electrons, and an atomic mass of 750?
250 (atomic mass MINUS protons)
500
DESCRIBE what a lithium atom would look like?
500
H2O is the formula for dihydrogen monoxide, or hydric acid, or WATER.
If this is the case, which of these molecules correctly shows this?
B