Chemistry, 21.06.2019 15:00 dsawnstevensonp9xhnr
Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)
Answers: 3
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c....
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