Physics

Replies / Views	Last post
Which of the following is a neutral subatomic particle? a. neutron b. proton c. electron d. ... Started by darbym82	1 Replies 233 Views	Jul 27, 2018 by cclemon1
The atomic number is determined by the number of: a. neutrons and protons b. neutrons and ... Started by Mr3Hunna	3 Replies 223 Views	Jul 27, 2018 by akpaschal
All atoms of an element have the same number of: a. ions b. protons only c. neutrons only d. ... Started by james0929	1 Replies 154 Views	Jul 27, 2018 by jackie
The nucleus of an atom contains: a. neutrons and protons b. neutrons and electrons c. protons ... Started by futuristic	1 Replies 307 Views	Jul 27, 2018 by johnharpe
The mass number of an atom is determined by the weight of: a. neutrons and protons b. neutrons ... Started by HudsonKB16	1 Replies 191 Views	Jul 27, 2018 by wtf444
An atom of sodium has an atomic number of 11 and a mass of 23 . How many neutrons does it have? ... Started by HCHenry	3 Replies 119 Views	Jul 27, 2018 by sierrahalpin
Carbon has several isotypes including 12C and 14C. These isotopes differ in the number of: a. ... Started by Jramos095	1 Replies 168 Views	Jul 27, 2018 by chreslie
When 14C goes through radioactive decay, one of its neutrons splits into a proton and an electron. ... Started by bobbie	1 Replies 103 Views	Jul 27, 2018 by orangecrush
In the shell model, the second shell can hold up to _____ electrons. a. one b. two c. four d. ... Started by rachel9	1 Replies 181 Views	Jul 27, 2018 by amandanbreshears
For an atom to be neutral, it must have the same number of: a. electrons and neutrons b. ... Started by dbose	3 Replies 97 Views	Jul 27, 2018 by princessflame2016
Which subatomic particles are arranged in various energy levels or orbitals? a. electrons only ... Started by rachel9	1 Replies 79 Views	Jul 27, 2018 by bbburns21
Water is an example of a(n): a. atom b. ion c. compound d. mixture e. ... Started by lilldybug07	1 Replies 106 Views	Jul 27, 2018 by momtoalll
A molecule is: a. a combination of two or more atoms b. less stable than its constituent atoms ... Started by azncindy619	1 Replies 223 Views	Jul 27, 2018 by Mochi
Magnesium has 12 protons. How many electrons are in its second energy level? a. two b. four c. ... Started by neverstopbelieb	3 Replies 125 Views	Jul 27, 2018 by CAPTAINAMERICA
Of the following, an atom with the atomic number ____ would be the least reactive. a. 1 b. 3 c. ... Started by charchew	1 Replies 96 Views	Jul 27, 2018 by bpool94
What is formed when an atom loses or gains an electron? a. a new element b. ion c. molecule d. ... Started by Starlight	1 Replies 65 Views	Jul 27, 2018 by mmpiza
The bond in table salt (NaCl) is: a. polar b. ionic c. covalent d. double e. ... Started by fnuegbu	1 Replies 148 Views	Jul 27, 2018 by cpetit11
What type of bond is formed whenever atoms share a pair of electrons? a. covalent b. hydrogen ... Started by audie	3 Replies 264 Views	Jul 27, 2018 by lorealeza77
What type of bond is(are) individually weakest? a. hydrogen b. ionic c. covalent d. Hydrogen ... Started by FButt	1 Replies 143 Views	Jul 27, 2018 by atrochim
A hydrogen bond is: a. a sharing of a pair of electrons between a hydrogen and an oxygen nucleus ... Started by jc611	1 Replies 194 Views	Jul 27, 2018 by epscape
Which of the following is(are) classified as true chemical bonds? a. hydrogen only b. ionic only ... Started by imanialler	1 Replies 120 Views	Jul 27, 2018 by chloejackso
How do hydrophobic molecules react with water? a. They are attracted to water. b. They are ... Started by stock	3 Replies 122 Views	Jul 27, 2018 by blakeserpa
Why does ice float on water? a. Ice is hydrophobic and repels water. b. Water molecules have ... Started by Mollykgkg	1 Replies 111 Views	Jul 27, 2018 by sylvia
A salt will dissolve in water to form: a. acids b. gases c. ions d. bases e. polar ... Started by WWatsford	1 Replies 117 Views	Jul 27, 2018 by sarajane1989
Of the following, pH ____ is the most acidic. a. 1 b. 3 c. 6 d. 7 e. ... Started by KWilfred	1 Replies 76 Views	Jul 27, 2018 by Sarahjh