Chemistry Review
Covalent bonds ________ electrons between elements.
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Bonus +50: rock-paper-scissors with another group. Whoever wins gets +50 and whoever loses gets -50.
About how much of the human body is water? (pick a number in the range)
60-75%
REVERSE! Choose another team and switch points.
What is the electronegativity difference between Fl and Fl?
0
Bonus +50: what kind of bond does Fl2 form?
Attraction between molecules of the same substance.
Cohesion
Name 5/7 members of BTS (stage or real name is ok).
RM - kim namjoon
SUGA - min yoongi
V - kim taehyung
Jeon Jungkook
Park Jimin
Kim Seokjin
Jhope - Jung Hoseok
T/F: hydrogen bonds are chemical bonds like covalent and ionic bonds.
False, they are weak attractive forces between partially positive and partially negative charges.
Almost _____ of Earth's surface is covered in water.
75%
What happens when two water molecules get close to each other?
hydrogen bonding
Water is a universal solvent because:
It dissolves more substances than any other liquid.
BTS fans are called ARMYs. What was the other name that was considered for the fandom?
Bells
Bonus +50: the teacher will give you a word related to "properties of water" and you must act it out with no words or sounds. if your team gets it right in 3 tries, you get the bonus points.
What does it mean when I say "oxygen is more electronegative than hydrogen"?
Oxygen pulls on shared electrons more and becomes slightly negatively charged. (as a result, hydrogen becomes slightly positive)
What are the three phases of water?
Solid, liquid, and gas
T/F: water and oil do not mix well because they are both polar substances
F: Water is polar and oil is nonpolar
Draw a methane molecule and write in the partial charges.
There are no partial charges ahahahahaha
REVERSE! Choose another team and switch points.
How many songs does BTS have that is all english? (Not including members solos). Name at least three.
3 - dynamite, butter, permission to dance
Are all of the bonds in this molecule covalent? Why? Mg(OH)2
No, Mg is a metal and covalent bonds are formed between NM and NM or NM and Metalloids.
What property of water is important for trees and why?
capillary action so water from roots can reach the leaves at the very top
Which part of NaCl is positive and which is negative? Why does it dissolve in water?
Na is very positive and Cl is very negative
Partially positive H --> negative Cl
Partially negative O --> positive Na
Bonus +100: pick a number and role a 4-sided die. If you guessed the number, +100. If your number is also even or odd with the die (you guess 2, dice says 4), get +50. If your number is not even/odd, -50.
Describe how capillary action works and an example in real life.
Adhesion between water molecule and the wall of another surface are attracted to each other, then cohesive forces between water molecules pull it up the wall.
Trees -- roots to leaves
Name 3/4 of RMs mixtapes/solo albums.
Indigo, Right Place Wrong Person, RM, Mono
Bonus +50: there are 9 butterflies hidden in the room. They are on the walls. You have 1 minute to find as many as possible. 1 butterfly = take 50 points from any team you pick.
How do you figure out if a bond between two atoms is polar? Give an example and explains step by step.
1. check if both atoms NM and metalloids (covalent bonding)
2. find the electronegativity difference between them (polar/nonpolar)
Bonus +100: listen to this song. You have 3 tries to guess the title. If you guess wrong 3x, -100.
Your blood is mostly water. What property of water is important to ensure nutrients and oxygen reach all parts of the body? Hint. it's not capillary action
Universal solvent
Water is less dense as a solid so it floats above denser liquid water.
What is the difference between heat capacity and heat of vaporization
Heat capacity -- ability to absorb energy without changing temperature quickly
Heat of vaporization -- amount of energy needed to change from liquid to gas form
Listen to this song- what is the English name.
Wildflower - RM