WorksheetsMole Quiz #1
Total questions: 10
Worksheet time: 7mins
Which of the following are ways to quantify matter?
mass
count
volume
all of these
Why do we need to be able to count atoms and molecules?
a census
because particles combine in whole number ratios in reactions
scientists must quantify everthing
How many things are in 1 mole?
12
500
6.02 x 1023
1.023 x 10602
Why are moles important in chemistry?
The mole relates mass to number of particles
Because we can't weigh elements
The mole is a special unit for very small things
True or False: 1 dozen of anything will have the same mass
true
false
True or False: 1 MOLE of anything will have the same mass
true
false
True or False: 1 dozen of 2 substances will have the same number of things
True
False
True or False: 1 MOLE of 2 substances will have the same number of particles.
true
false
You have a bag of rice that weighs 500. grams. If 10 grains of rice have a mass of .30 grams. How many grains of rice are in the bag of rice?
12
1,000,000
16,667
6.02 x 10 23
In the balanced equation 2 Na + Cl2 yeilds 2NaCl What is the ratio of the reactants sodium to chlorine?
2:1
1:2
2:2
1:2
