What are the horizontal rows on the periodic table called?
Periods
100
If an atom is neutral why does the number of electrons HAVE to be the same as the number of protons?
Because electrons are negative and protons are positive. Positives and negatives cancel out.
100
What does the atomic number tell you?
The number of protons in an atom.
100
Label the blanks as products and reactants:
___________ -> _____________
Reactants -> Products
100
When you walk does your left are swing with your left or right leg? NO CHEATING
Left swings with left for most people
200
Which is always a larger number;
the atomic number or the atomic mass
Atomic mass because it is protons + neutrons
the atomic mass is only the number of protons
200
What is the name of the outermost electrons
Valence Electrons
200
What does the atomic mass tell you?
The number of protons plus neutrons
200
Provide an analogy of a synthesis reaction and a decomposition reaction.
Analogies are comparisons like when I compare energy levels to layers of an onion.
Answers may vary
Examples from class =
Building skates for synthesis and an egg hatching as decomp.
200
What is the name of the sister that katniss volunteers as tribute for?
Prim
300
What number on the periodic table tells you how many valence electrons an atom of that element has?
The group number
300
If an atom has 2 valence electrons, what rule explains that it will bond with an atom that has 6 valence electrons?
The octet rule. Atoms want 8 electrons in their outer shell.
300
What is the atomic mass of an atom that has 32 neutrons and the atomic number is 35?
67
300
Would the following be a single or double displacement reaction?
Mg + HCl -> MgCl + H
Single displacement
300
On the TV show, Fresh Prince of Bel-Air, who plays the role of Will Smith?
I know it's an old show... but it's awesome!
Will Smith
400
How many electrons does an atom have if there are 14 protons in its nucleus and it has a total charge of -3?
17, because electrons are negative
-17 + 14 = -3
400
Will atoms in group 18 bond with anything? Explain why.
No because they already have 8 electrons in their outer shell.
400
What is the difference between a Lewis structure and a Bohr Model?
Lewis structures only show valence electrons, and Bohr models show every electron.
400
What do subscripts and coefficients tell us about the chemical reaction?
Subscripts show how many atoms there are for the element
Coefficients show how many molecules there are of a compound.
400
How many stripes are there on the American flag, and what do they represent?
13 to stand for the 13 British colonies that declared independence
500
What is the name given to different versions of an atom?
These are also the reason the periodic table displays the atomic mass as a decimal.
Isotope
500
Is the equation on the whiteboard balanced?
No, You have different numbers of atoms as reactants than the number of atoms as products.
500
How many electrons fit in each energy level?
First level = 2
Second level = 8
Third level = 18
500
What does it mean to have a balanced chemical equation?
That the number of atoms on the reactants side equals the number of atoms on the products side.
It shows that mass is not created or destroyed.
500
What two brands of clothing are Mr. Holzer's two cats named after?
Think carefully, I know you probably haven't heard their names in a long time.
Roxy (sometimes Roxy-fat) is the grey one
Hurley (sometimes Hully-monster) is the black one