Chemistry, 12.10.2020 20:01 bonetanne7171
Click the blue words to correct the following statements.
Atoms are tiny pieces of matter that make up all the substances around you. All
atoms contain one or more positively charged particles called electrons, which are
found in an atom's nucleus. In many atoms, the nucleus also contains neutrons,
which have a positive electrical charge. There are also small, negatively charged
particles called protons found inside the nucleus. Together, these three types of
particles make up the structure of atoms.
When two atoms have the same atomic number, they have the same number of
neutrons, and they are are classified as the same chemical element. All known
chemical elements are arranged by atomic symbol in the periodic table. The
periodic table contains information about each element, often including a short
version of the element's full name called its atomic symbol.
Help plzzz
Answers: 1
Chemistry, 21.06.2019 15:20, zymikaa00
Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.
Answers: 2
Chemistry, 22.06.2019 12:30, fvmousdiana
In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)
Answers: 3
Chemistry, 22.06.2019 17:00, brownvester44
Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.
Answers: 2
Click the blue words to correct the following statements.
Atoms are tiny pieces of matter that make...
Chemistry, 25.01.2021 19:40
English, 25.01.2021 19:40
English, 25.01.2021 19:40