subject
Chemistry, 13.01.2021 21:20 levicorey846

Which of the following paragraphs provides information that would be MOST useful for students to understand why protons are the most important subatomic particles for defining the atom? The nucleus consists of protons and neutrons. (The ordinary hydrogen atom is an exception; it contains one proton but no neutrons.) Protons carry a positive electrical charge, while neutrons carry no electrical charge.

The atomic number determines what kind of an atom it is. Every atom is associated with a specific chemical element. An atom is the smallest unit of an element, and each chemical element has a unique atomic number. For instance, hydrogen has an atomic number of 1 because every hydrogen atom has one proton in its nucleus. No other element has an atomic number of 1.

Atoms that have the same atomic number but different mass numbers are called isotopes. Carbon-12, the ordinary form of carbon, has six protons and six neutrons per atom. Carbon-14 is an isotope with eight neutrons per atom.

An ordinary atom has an equal number of protons and electrons. So the positive and negative charges are balanced. Some atoms, however, lost or gain electrons in chemical reactions or in collisions with other particles. Ordinary atoms that either gain or lose electrons are called ions.

ansver
Answers: 1

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 16:00, rorymartin04
No copying 15 pts how does a free-body diagram tell you about the net force on an object?
Answers: 2
image
Chemistry, 23.06.2019 08:50, carlinryan
Why are enzymes important to cells? they bring about chemical reactions. they provide structural support. they form the two layers of membranes. they store large quantities of energy.
Answers: 2
image
Chemistry, 23.06.2019 10:30, lavorisjonesjr1
How much mass would a mole of hydrogen molecules contain? recall that hydrogen is diatomic. g/mol
Answers: 3
image
Chemistry, 23.06.2019 11:30, junahsisney
Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.
Answers: 1
You know the right answer?
Which of the following paragraphs provides information that would be MOST useful for students to und...

Questions in other subjects: