8th Grade Math
10 times 60
600
A + B --> AB
What is synthesis?
Ca4
4 calcium atoms / 4 Ca
The periodic table category of Si
(Metals / Nonmetals / Metalloids)
What is metalloid?
Molecules that heat up start moving...
What is faster?
103
1,000
AB --> A + B
2 H2O
4 H
2 O
Where is the mass number on your periodic table?
What is THERE IS NO MASS NUMBER?
Heat always moves _________ of the warmer object and ________ the cooler object.
What is OUT & INTO?
What does PEMDAS stand for?
Parentheses, exponent, multiply/divide, add/subtract
AB + C --> A + CB
What is single displacement?
CH3(COOH)
2 C
4H
2O
The name of an atoms once it looses electrons
What is cation?
Burner heating a pan
Spoon getting hot as it is in hot tea
Ironing clothes leaves them warm
Hot pavement burns your bare feet
All are examples of
What is Conduction?
x + y = 50
x - y = 30
x = 40
y = 10
AB + CD --> AD + CB
What is double displacement?
CH2(COOH)2
C 3
H 4
O 4
The name of the metals in the middle section of the periodic table
What is transition metals?
Rising warm air forms clouds
Lava lamps
Hot air balloons
The water of a covered pool is cooler at the bottom
All are examples of:
What is Convection?
(x+7)(x-7)
x2 + 49
2CH3 + 4O2 --> 2CO2 + 3H2O
What is combustion
H2(PO4)2
H 2
P 2
O 8
Describe the movement of atoms according to temperature (Hot vs Cold)
What is when the temperature is cold, atoms move slowly, when temperature heat up, atoms move faster
A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of
What is Radiation?
1/3 + 3/4
1 & 1/12 or 13/12
HCl+ NaOH --> NaCl + H2O
PCH3(PO4)2
P 3
C 1
H 3
O 8
The atom with 45 neutrons and 8 ve-
What is Bromine?
The sun heats land faster than water during the day, causing warm air over the land to rise and cooler air from the sea to rush in.
This is an example of:
What is convection?
proportion question
Susie read 20 books in 60 mins. how many books would she read in 100 mins
33.33
2 Na + 2 H2O --> 2 NaOH + H2
PHClCH3(PO4)3
P 4
H 4
Cl 1
C 1
O 12
The name of an atom with different amount of neutrons
What is Isotope?
You bake cookies in an oven. Describe each type of heat transfer going on.
What is
- The oven burners / coil sends heat through radiation to the inside of the oven
- The baking sheet warms the cookie through conduction
-The heat rises through the cookies / heat rises in the oven to the cookies through convection