Part E Water can exist in three different states of matter: solid, liquid, and gas. The water molecules are the same in each state, but the distance between them changes as water changes state. Space your four molecules evenly on one sheet of paper. Now place the second sheet of paper next to the first sheet, so the long edges of the sheets are touching. Space your four molecules evenly over both sheets of paper. Compare the two models. Does this demonstration show how the distance between water molecules can change? Were the molecules more tightly-packed on one or two sheets of paper? Explain.

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

What is the role of the phospholipid belayer in cellular transport in living cells

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?