What are atoms, compounds, and elements?

Related questions

• Explain how atoms are like the alphabet.
• Explain how compounds and mixtures differ.
• Explain how molecular compounds are named.
• How can compounds be broken apart?
• How do you calculate atoms of an element?
• How do you calculate density of matter?
• How do you calculate molar mass of compounds?
• Why do elements burn different colors?
• What are electrons?
• What are common mistakes students make with the periodic table?