1 How can you tell the difference between a physical property and a chemical property?2 Which has greater densitym a piece of copper wire, or the bar of copper from which the wire is made?3 Which has more volume, one kilogram of glass or one kilogram of cork?5 Describe how the arrangement of the atoms and molecules ina sugar crystal differ from those in a piece of plastic.7 If two steel wires made with different cross-section areas are tested under the same force, which would have the higher stress?9 What is teh difference between tension and compression?11 How does the buoyant force of a rock submerged in water compare to the weight of the water displaced by the rock?13 Would a cube of solid silver sink or float in liquid silver? How do you know?
First, the reason why so few answer questions like this is because you wrap so many question in to one. 1)The first two sources show what chemical properties and physical properties are like. The properties that are effected by ionic and covalent bonding are chemical properties. All others are physical properties. 2) There are no differences in the densities. 3) Because the density of cork is less, it has more volume. 5) The crystals are in an orderly pattern of molecules in three dimensions. By definition plastics are not orderly and are no where near as stiff as crystals. They are not as tight in their packing and they are not orderly repeating patterns in all three dimensions. 7) Stress is defined by force divided by area. The same force and smaller cross sectional area. This is the greater force. 9) Tension is pulling away, compression is pushing in. 11) The rock under the water weighs less. The amount it weighs is same as the amount as the exact volume of water it displaced. 13) 1 kg of melted silver is a larger volume than 1 kg of solid silver. Because the density is less in the liquid, the solid would sink until it melts.
They are 97.5% zinc and 2.5% copper
copper, in the UK there's a song you see when a cop drives by that goes what is the color of a one-cent piece? Copper!
