Q: Answer the following question given this paragraph: A nonmetal is an element that is generally a poor conductor of heat and electricity. Many properties of nonmetals are the opposite of those seen in metals. There is a wider variation in properties among the nonmetals than among the metals, as seen in Figure below . Nonmetals exist in all three states of matter at room temperature. The majority are gases, such as nitrogen and oxygen. Bromine is a liquid, and a few are solids, such as carbon and sulfur. In the solid state, nonmetals are brittle, meaning that they will shatter if struck with a hammer. The solids are not lustrous, and their melting points are generally much lower than those of metals. On the periodic table in the Figure above , the nonmetals are shaded green and appear to the right of the stair-step line. Q: An element that is generally a poor conductor of heat and electricity is known as a ______ A: | OPTIONS:
- magnet
- alloy
- superconductor
- nonmetal
A: nonmetal

Q: Answer the following question given this paragraph: In our calculation, we have ignored the reaction of the weakly basic anion with water, which tends to make the actual solubility of many salts greater than the calculated value. Exercise One crystalline form of calcium carbonate (CaCO3) is the mineral sold as "calcite" in mineral and gem shops. The solubility of calcite in water is 0.67 mg/100 mL. Calculate its Ksp. Answer: 4.5 109. Q: One crystalline form of calcium carbonate is the mineral sold as what? A: | OPTIONS:
- quartz
- basalt
- salt
- calcite
A: calcite

Q: Answer the following question given this paragraph: Q: Rain, snow, sleet, and hail are all examples of what? A: | OPTIONS:
- temperature
- erosion
- liquids
- precipitation
A: precipitation

Q: Answer the following question given this paragraph: Secondary pollutants are formed when primary pollutants interact with sunlight, air, or each other. They do not directly cause pollution. However, when they interact with other parts of the air, they do cause pollution. For example, ozone is created when some pollutants interact with sunlight. High levels of ozone in the atmosphere can cause problems for humans. Q: What are formed when primary pollutants interact with sunlight, air, or each other? A: | OPTIONS:
- cross pollutants
- typical pollutants
- secondary contaminants
- secondary pollutants
A: secondary pollutants