5) How will each of the following experimental errors influence the results of your calculated densities you reported? State whether the error will tend to make your density results too large, too small or unchanged. Explain why this would occur by identifying which measurements would be affected (high or low) and how this would affect the calculated density. a) In method 2, the metal cylinder you used had a number of air bubbles on its when immersed in the water.

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When calculating the percent error how do I know how many digits should be in my final answer can you give me a example? Can you provide me with example explaining the rule?

2. Are the following chemical (C) or physical changes (P)? Sugar dissolves in water b) Sugar is heated to form caramel. Water evaporates. d) Charcoal burns on a grill.

An object floats in water if it less dense than water. In other words if the volume of the material weighs less than the same volume of water (for example a piece of plastic). An object sinks in water if it is more dense than water (for example a piece of steel). The same principle applies for objects surrounded by air. Objects that are less dense than air, i.e., weigh less than the same volume of air, will float upward. For example, a helium-filled balloon floats upward because the helium inside the balloon weighs less than the same volume of air, since helium molecules weigh less than the nitrogen and oxygen that make up most of our atmosphere. Objects that are more dense than air, like humans, sink to the bottom of the atmosphere. Suppose we put some air in a sealed, flexible container like a balloon. No air can enter or leave the container, but since the container is flexible, it can easily change its size or volume. At first, the air temperature, air number density, and air…