In the chemical formula I4 (Iodine), this is considered an "____."
What is an element ?
In the chemical formula CO₂, what element does the symbol "C" represent?
A substance made of two or more different elements that are chemically bonded together.
What is a compound ?
What small number written below and to the right of an element symbol tells you the number of atoms in a formula?
What is a subscript ?
Sodium and Chlorine
How many total atoms are in a single molecule of water (H₂O)?
3 atoms total. 2 atoms of Hydrogen and 1 atom of Oxygen.
If you eat a spoonful of NaCl, what did you just eat ?
What is table salt ?
This creation is known for its arrangement of all elements known to man.
What is the periodic table ?
Look at the formula for glucose: C₆H₁₂O₆. How many TOTAL atoms are in this molecule?
24 atoms total.
Is O2 and I3 a compound ? Explain.
No, O2 and I3 are not compounds. They are both composed of multiple atoms of just one element.
A mystery compound has the formula Ca2CO3K.
1. What elements are present ?
2. How many atoms of "C" are present ?
3. How many total atoms are present in this formula ?
1. Calcium, Carbon, Oxygen, and Potassium.
2. 1 atom of Carbon
3. 7 total atoms.
2 atoms of Calcium, 1 atom of Carbon, 3 atoms of Oxygen, and 1 atom of Potassium.
Identify the elements ini Ca(OH)2.