Multiple Choice Question In chemistry, elements ________. O have distinct chemical characteristics O are the primary form of energy O readily change from one form to another O are rarely found in ionic form
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In chemistry, elements choices are: have distinct chemical characteristics are rarely found in ionic form are the primary form of energy readily change from one form to another
Madhur L.
17) Both S12 (s) and S8 (s) are stable forms of elemental sulfur. Diamond and graphite are both stable forms of solid elemental carbon. O2 and O3 (ozone) are stable elemental forms of gaseous oxygen. These are all examples of ______. a) Isotopes b) Amphoteric behavior c) Allotropes d) Heliotropes e) Useless information to bring up at your next party 18) Which property below is not characteristic of the halogens? a) They are monatomic b) They have some of the most negative electron affinities c) Fluorine and chlorine are more reactive than bromine and iodine d) They react with most metals to form ionic halides e) They are nonmetals 19) A certain element is a soft silvery white metal that can be cut with a butter knife. It tarnishes rapidly in air, forming an oxide on its surface. The metal will burn in air and it react with water to form a basic solution. This element is probably a member of: a) The halogens b) The noble gases c) The alkaline earth metals d) The alkali metals e) The transition metals 20) A certain element is highly stable. It is colorless, odorless, and it has no known true chemical compounds containing it. This element is probably a member of: a) The halogens b) The noble gases c) The alkaline earth metals d) The alkali metals e) The transition metals
Sri K.
1. When elements form compounds, the elements always change their physical state. 2. keep their original properties. 3. react to form a new substance with new properties. 2. Which of the following describes compounds? 2. are composed of elements that join in a specific ratio according to their masses 3. are composed of two or more elements that are physically combined 4. are random combinations of elements 5. have the same characteristic properties as the elements that form them 6. combine in a random fashion.
Shaiju T.
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