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Chemistry, 23.06.2019 15:30
In a modern periodic table, there are seven periods. a period is any horizontal row of the periodic table, and the elements in a period have consecutive atomic numbers. a group is any vertical column in the periodic table, and there are 18 such groups. groups 3–12, also known as the “b” group elements, are called transition metals. groups 1–2 and 13–18, also known as the “a” group elements, are sometimes called the main groups. metals are characterized by malleability, ductility, conductivity, and a tendency to lose electrons. main group metals are found in groups 1 and 2. nonmetallic elements fall on the right-hand side of the periodic table, that is, groups 13–18. nonmetals have the tendency to gain electrons and are generally brittle. they can be solids, liquids, or gasses at room temperature. now, label the areas of the modern periodic table using the above information. drag the appropriate labels to their respective targets.
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Chemistry, 23.06.2019 22:00
Sugar will melt ice but is not as effective as salt because salt breaks down into sodium and chloride ions so when one molecule of salt dissolves into the ice, it will add two components to the solution which provide more interference in preventing the water molecules from freezing.
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Chemistry, 23.06.2019 22:20
4no + o2 + 2 h2o → 4 hno2 the reaction above is second order in nitric oxide and first order in oxygen. how much faster will the rate be if the concentration of no is tripled? 9 times faster 6 times faster 3 times faster 8 times faster
Answers: 1
Is there wonder trade in pokemon brilliant diamond...
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