What are some real life examples of atoms and compounds?

Green plants contain chloroplasts. What role do chloroplasts play in photosynthesis? Convert 99 cm to inches? When working in a lab a sample is thought to contain DNA. What method could be used to test for DNA in the sample? How is Aristotle's inability to detect parallax lead him to propose a geocentric model of the solar system? How could introduced species disrupt existing feeding relationships? Why does powder juice dissolves faster in hot water? A solution contains 180g of glucose C6H12O6 and 162 g of water What is the mole fraction of glucose? How far away from the Sun is the other focus of Earth's orbit? What are two important gases for weather conditions? What bonds involve the movement of electrons from one atom to another? What is the purpose of an iconator? Which blade is the longest in a 3 pin plug? What are the five ways that leads to the formation of sedimentary rock? What makes phenolphthalein turn alkali pink? How does sustainability relate to global warming? What kind of rock is forms when heat and pressure of mountain building change sedimentary rock? Which kingdom of organisms will likely be divided in to several kingdoms soon because of diversity? 2 qt and 1 pt equals how many pints? Why we get energy when we drink glucose? What type of root kit is attacked by impersonating trusted drivers?