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Chapters 7-9
Chm101, Test 3, Scruggs, ASU, Ch 7-9
| Question | Answer |
|---|---|
| A measure of the quantity of matter. | Mass. |
| A characteristic of a substance involving the possible transformations that the substance can udergo to produce a new substance. | Chemical Property. |
| A combination of two or more substances that can be separated by phyical means. | mixture |
| A pure substance that cannot be broken down into simpler stable substances in a chemical reaction. | element |
| The capacity to do work or to transfer heat. | energy |
| A characteristic of a substance that can be observed without changing its composition. | physical property |
| The physical state in which matter has no characteristic shape but takes the shape of the filled portion of its container. | liquid |
| the ratio of the mass of a substance to its colume. | density |
| a mizture with uniform composition. | homogenous mixture |
| the physical state of matter characterized by a fixed shape and low compressibility. | solid state |
| List characteristics of metals. | Metals are lustrous (shiny) and conduct heat and electricity. In addition, you can form wires with metals (ductile) and you can make foil out of them by hitting them with a hammer (malleable). |
| Name the elements: a) B b) Ba c) Be d) Br e) Bi | a) Boron b) Barium c) Beryllium d) Bromine e) Bismuth |
| Name the following elements: a) N b) Fe c) Mn d) Mg e) Al f)Cl | a) Sulfur b) Iron c) Manganese d) Magnesium e) Aluminum f) Chlorine |
| Classify each of the following as an element or a compound: a) O2 b) Fe2O3 c) P4 d) He e) NaCl f) H20 | a) element b) compound c) element d) element e) compound f) compound |
| What type of matter expands to fill its container and can be compressed to a smaller volume? | gas. |
| How might you symbolically represent a homogeneous mizture of oxygen, O2, and water? | O2(aq) |
| Why do liquids have greater densities than gases? | Molecules in the liquid state are closer together than molecules in the gas state. This means that when a liquid or gas occupies the same size container, there will be more molecules of the liquid than the gas. |
| What is the diference in temp between the boiling point of water and the freezing point of water in each: a) Celsius b) Kelvin c) Fahrenheit | a) 100C b) 100K c) 180F |
| Identify each as a physical proerty or chemical property: a) mass b) density c) flammability d) resistance to corrosion e) melting point f) reactivity with water | a) physical b) physical c) chemical d) chemical e) physical f) chemical |
| Identify each of the following as a physical change or a chemical change: a) boiling acetone b) dissolving oxygen gas in water c) combining hydrogen and oxygen gas to make water d) burning gasoline e) screening rocks from sand | a) physical b) physical c) chemical d) chemical e) physical f) chemical |
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annabannana