Following is a list of properties of a sample of solid sulfur: 1. Brittle, crystalline solid.
II. Melting point of 113°C.
III. Density of 2.1 g/cm²
IV. Combines with oxygen to form sulfur dioxide.
Determine which characteristics are chemical properties. Explain.
A)
IV. This property can only be determined by chemical reacting the sample
of sulfur.
B)
I and II. These properties can only be determined by chemical reacting the
sample of sulfur.
C)
III. These properties can be determined by physical measurements. The
sulfur does not need to react, chemically, in order to measure these
properties
D)
III and IV. These properties can be determined by physical measurements.
The sulfur does not need to react, chemically, in order to measure these
properties.
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When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.