A measure of how much an atom attracts an electron
What is electronegativity
100
Areas of a molecule taht have a higher concentration of electrons will repel each other and these repulsions will affect the shape of the molecule
What is VSPER
100
List all of the diatomic substances
Br, I, N, Cl, H, O, F
100
when balancing equations, what can you never do?
change the subscripts
100
What is wrong with this equation:
Na+Cl--->NaCl
Chlorine needs to be bonded to something, it should be Cl2
200
What is the difference of the electronegativities between aluminum and nitrogen?
1.6
200
What shape does O3 (ozone) have?
. .
o
= -
o o
200
If a substance is diatomic, then what must it always be?
It always must be bonded to something
200
The only number you can change while balancing equations
What is a coefficient
200
During a combustion, what is reacting with hydrocarbon?
oxygen
300
Are Bromine and Silicon polar, nonpolar, or ionic?
Polar
300
The bond angle on this 3-D shape is 109.5 degrees
What is a tetrahedral shape?
300
Why can't NaMg be produced?
because they are both positive ions
300
this is a small number that tells you how many atoms are in a compound
What is a subscript
300
These are never created nor destroyed, but they are rearranged
What are atoms
400
What is the trend of polarity in terms of the periodic table?
electronegativity increases from left to right.
400
What does VSPER stand for?
Valence Shell Electron Pair Repulsion
400
What is the difference between single replacement reactions and double replacement reactions?
Double replacement uses four different chemicals and has 2 replacements, single replacement uses 2 and has 1 replacement
400
How many hydrogen atoms are in 3H2O?
6 atoms
400
What is the 3-D shape of water (H2O)
Bent Shape
500
why does flourine have the highest electronegativity?
flourine has 7 out of 8 electrons in its outer energy level, also this energy level is the second energy level and is vloser to the nucleus so it has a greater pull on its electrons.
500
What determines the bond angle?
the number of electron reigons
500
What is the equation for the decomposition of calcium oxide?
CaO + O2----> Ca + O2
500
Balance this equation:
___Na3 + ___MgBr2--->____Mg3P2 +___NaBr