Which statements about the structure of the periodic table are true? a. the periodic table has an irregular shape because it has more periods than groups. b. the inner transition elements are placed at the bottom of the periodic table for easy viewing. c. the periodic table has horizontal groups and vertical periods, giving it a regular rectangle shape. d. the distribution of electrons in energy levels is responsible for the shape of the periodic table. e. nonmetals take up more than half the area of the periodic table. more than one correct answer
Answers: 1
Chemistry, 22.06.2019 18:30
The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of
Answers: 2
Chemistry, 22.06.2019 21:30
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
Answers: 2
Chemistry, 23.06.2019 07:30
Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton βββββ βββββ rosalind franklin marie curie βββββ βββββ gertrude b. elion ada yonath βββββ βββββ henry cavendish robert boyle βββββ βββββ antoine lavoisier mario j. molina βββββ βββββ svante arrhenius
Answers: 1
Chemistry, 23.06.2019 16:30
In chile, the deepest earthquake occurred at 61.7Β°w longitude at a depth of 540 km. if the rocks at the focus began subducting 10 million years ago and are now 1000 km from their original position, what is the average rate of subduction in cm/yr?
Answers: 1
Which statements about the structure of the periodic table are true? a. the periodic table has an...
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