Chemical Symbols and Formulas

This video tutorial explains atomic symbols found on the periodic table, how to write chemical formulas for compounds and molecules, and how to interpret these formulas. It covers writing symbol equations from word equations and naming chemical compounds using common endings. The video concludes with additional resources for further learning.

What is the atomic symbol for magnesium?

• MgO

• Ma

• Mn

• Mg

Which element is represented by the symbol 'Fe'?

• Fermium

• Iron

• Fluorine

• Francium

Which of the following is the correct chemical formula for glucose?

• CH6O12

• C12H6O6

• C6H12O6

• C6H6O12

In the chemical formula H2O, what does the '2' indicate?

• Two hydrogen atoms

• Two molecules of water

• Two oxygen atoms

• Two elements present

What does the chemical formula CO2 represent?

• Carbon dioxide

• Carbon monoxide

• Carbon tetroxide

• Carbon trioxide

Which of the following reactions is correctly represented by a symbol equation?

• Mg + O2 -> MgO

• Ca + Cl2 -> CaCl

• Fe + O2 -> FeO2

• Na + Cl -> NaCl2

What does the ending 'sulfate' in a chemical formula indicate?

• Presence of sulfide

• Presence of oxygen

• Presence of SO4

• Presence of sulfur

If a chemical formula ends with 'OH', what is it called?

• Hydrogen

• Hydrate

• Oxide

• Hydroxide

What is the name of the compound with the formula Na2CO3?

• Sodium sulfate

• Sodium carbonate

• Sodium nitrate

• Sodium chloride

What is the correct name for the compound KNO3?

• Potassium nitrate

• Potassium nitrite

• Potassium nitride

• Potassium nitroxide