2: Carbon atoms and fatty acids Quizellenjmchenry2022-01-22T14:21:51-05:00 Please sign up for the course before taking this quiz. CH4 is1 ethane butane propane methane How many carbon atoms does propane have?1 1 3 2 4 A fatty acid is a COOH group attached to a chain of carbons (with H’s attached to them).1 False True Which type of substance can dissolve in water?1 polar nonpolar Which one of these is not a form of pure carbon?1 diamond nanotube graphite plastic polymer True or false: Hydrogen atoms like to be right next to each other.1 False True What makes methane a non-polar molecule?1 The fact that the electrons travel around the molecule evenly, not spending more time in any one place. The fact that carbon is found in the top portion of the Periodic Table. The fact that it has 8 electrons in its outer shell. The fact that the hydrogen atoms have only one proton in their nucleus. What is the “fat” part of a fatty acid?1 the chain of carbon atoms neither the last carbon at the end of the chain the COOH How many bonds can a carbon atom make?1 2 1 4 8 What is one reason that two carbon atoms would bond with each other?1 They are in the middle of a molecule. They are both lonely. They have too many hydrogens. They are each missing a hydrogen. When COOH is attached to a molecule, this makes it a(n)1 nonpolar molecule fat base acid Why is COOH called an acid?1 Because the OH falls off easily, putting hydroxide ions into the environment around it. Because it has two oxygen atoms. Because it stings if you get it on your skin. Because the H can fall off easily, putting protons into the environment around it. Which shape is most similar to a methane molecule?1 star cube sphere pyramid Which substance will be able to have more drops on a penny?1 polar nonpolar What is the reason that oil and water do not mix?1 Because they are both polar and like charges repel. Because they don't like each other. Because one is polar and one is nonpolar. Because they all have 8 electrons in their outer shell and therefore don't want to bond. True or false? Water molecules are very likely to intereact with methane molecules.1 True False How many electrons does a hydrogen atom have?1 8 0 2 1 Is oil polar or nonpolar?1 nonpolar polar Food chemists can open double bonds in a carbon chain and put hydrogens in. If you read good labels you will see this listed as1 total calories from fat hydrogenated oils (fats) junk food carbonation How many protons does a carbon atom have? (which is the same as its atomic number)1 6 12 8 4 1: The water molecule 3: Lipids and glycerol Back to: 2: Carbon atoms and fatty acids
