What’s A Mole?
In biology, a mole is small brown furry mammal.
In chemistry, and mole describes a quantity.
We have all seen examples of terms that describe quantities before. Here are a few examples.
1 pair= 2 units (pair of aces, pair of socks)
1 dozen= 12 units (dozen doughnuts, dozen eggs)
Can you think of any other examples of terms that describe a quantity?
______
When it comes to chemicals, the basic units for particles are atoms or molecules. They are very tiny objects that are not visible to the naked eye or a microscope! Because of this, the number that represents the quantity of particles in 1 mole is large.
1 mole (anything) = 602,200,000,000,000,000,000,000 particles (atoms or molecules)
What is this number in scientific notation? ______
This number is equal to 1 mole, and has been defined as Avogadro’s Number.
The abbreviation for MOLE is mol.
How many neon atoms are in one mole of neon? ______
How many water molecules are in one mole of water? ______
How many sand grains are in one mole of sand grains? ______
How many hydrogen atoms are in 2.0 moles of hydrogen? ______
How many aluminum atoms are in 3.0 moles of aluminum? ______
How many silicon atoms are in 0.5 moles of silicon? ______
KEY - What’s A Mole?
In biology, a mole is small brown furry mammal.
In chemistry, and mole describes a quantity.
We have all seen examples of terms that describe quantities before. Here are a few examples.
1 pair= 2 units (pair of aces, pair of socks)
1 dozen= 12 units (dozen doughnuts, dozen eggs)
Can you think of any other examples of terms that describe a quantity?
Case = 24 , 6-pack = 6, gross = 144 pieces. Ream = 500 sheets of paper
When it comes to chemicals, the basic units for particles are atoms or molecules. They are very tiny objects that are not visible to the naked eye or a microscope! Because of this, the number that represents the quantity of particles in 1 mole is large.
1 mole (anything) = 602,200,000,000,000,000,000,000 particles (atoms or molecules)
What is this number in scientific notation? 6.022 x1023
This number is equal to 1 mole, and has been defined as Avogadro’s Number.
The abbreviation for MOLE is mol.
How many neon atoms are in one mole of neon? 6.022 x1023neon atoms
How many water molecules are in one mole of water? 6.022 x1023 water molecules
How many sand grains are in one mole of sand grains? 6.022 x1023 sand grains
How many hydrogen atoms are in 2.0 moles of hydrogen? 1.2044 x1024hydrogen atoms
How many aluminum atoms are in 3.0 moles of aluminum?
3.0 x 6.022 x1023 = 1.8066 x1024 moles of aluminum
How many silicon atoms are in 0.5 moles of silicon?
0.5 x 6.022 x1023 = 3.011 x1023 atoms of silicon