Any one who answer these questions gets 20 pts.
which is the largest category of elements on t...
Any one who answer these questions gets 20 pts.
which is the largest category of elements on the periodic table?
a. metals
b. metalloids
c. nonmetals
d. noble gases
what do the atoms of elements in the same period have in common?
a. they have the same number of protons.
b. they have the same number of neutrons.
c. they have the same number of electron shells.
d. they have the same number of electrons in their outermost shells.
approximately how many elements are there that combine chemically in a great number of ways to produce compounds?
a. 25
b. 50
c. 75
d. 100
what are the rows of the periodic table of the elements also called?
a. groups
b. periods
c. families
d. columns
Answers: 2
Chemistry, 22.06.2019 06:00
According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead
Answers: 2
Chemistry, 22.06.2019 22:30
Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?
Answers: 1
Chemistry, 23.06.2019 03:50
Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products
Answers: 1
Chemistry, 23.09.2021 21:20
Mathematics, 23.09.2021 21:20
Mathematics, 23.09.2021 21:20
Law, 23.09.2021 21:20
Mathematics, 23.09.2021 21:20
Chemistry, 23.09.2021 21:20
Biology, 23.09.2021 21:20