Chemistry

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Which of the following common kitchen chemicals are toxic at certain concentration or under certain ... Started by ericka1	1 Replies 171 Views	Aug 27, 2018 by brittanywood
All isotopes with Z < 83 are radioactive. Indicate whether the statement is true or ... Started by abern	1 Replies 84 Views	Aug 27, 2018 by robbielu01
Which pair of substances could be used to illustrate the law of multiple proportions? A) SO2, ... Started by karateprodigy	3 Replies 213 Views	Aug 27, 2018 by Ksh22
Nuclear reaction rates are not affected by changes in temperature. Indicate whether the statement ... Started by cool	1 Replies 103 Views	Aug 27, 2018 by taylorsonier
Which statement below correctly describes the responses of alpha, beta, and gamma radiation to an ... Started by jman1234	1 Replies 207 Views	Aug 27, 2018 by Joy Chen
Table salt is a A) flavoring. B) flavor enhancer. C) preservative. D) ... Started by V@ndy87	1 Replies 216 Views	Aug 27, 2018 by nixon_s
After one half-life, 50 of a radioactive sample will remain. After the second half-life, none of the ... Started by LaDunn	3 Replies 175 Views	Aug 27, 2018 by tdewitt
Which one of the following is not true concerning cathode rays? A) They originate from the ... Started by D2AR0N	1 Replies 96 Views	Aug 27, 2018 by rleezy04
Radioactive dating can only be used to date very old objects. Indicate whether the statement is ... Started by 2125004343	1 Replies 194 Views	Aug 27, 2018 by chloejackso
Which of the following is the most poisonous? A) botulin B) strychnine C) nicotine D) ... Started by BRWH	1 Replies 97 Views	Aug 27, 2018 by Mochi
An example of an alkaloid is A) estradiol. B) acetic acid. C) methionine. D) ... Started by khang	3 Replies 75 Views	Aug 27, 2018 by sierramartinez
________-rays consist of fast-moving electrons. A) Alpha B) Beta C) Gamma D) X E) none of the ... Started by vHAUNG6011	1 Replies 225 Views	Aug 27, 2018 by ecabral0
The relative sweetness scale uses ________ as a reference. A) propionic acid B) mannose C) ... Started by crazycityslicker	1 Replies 124 Views	Aug 27, 2018 by cuttiesgirl16
An alkaloid is a(n) A) carcinogen that is made by plants. B) heterocyclic amine that is occurs ... Started by dejastew	1 Replies 98 Views	Aug 27, 2018 by firehawk60
It will take three half-lives for all of a radioactive sample to decay. Indicate whether the ... Started by krzymel	3 Replies 95 Views	Aug 27, 2018 by livaneabi
Many household cleaners contain strong acids or bases. Drain cleaners, oven cleaners and toilet bowl ... Started by Alainaaa8	1 Replies 123 Views	Aug 27, 2018 by macmac
Low calorie sweeteners have A) low calorie structures. B) fewer atoms than natural sweeteners. ... Started by wenmo	1 Replies 201 Views	Aug 27, 2018 by atrochim
The first fuels were plant materials. Indicate whether the statement is true or ... Started by sjones	1 Replies 166 Views	Aug 27, 2018 by kthug
The active ingredient in which of the following is a corrosive poison? A) ammonia B) drain ... Started by pane00	3 Replies 133 Views	Aug 27, 2018 by Bison
Which one of the following is not an intensive property? A) density B) temperature C) melting ... Started by Hungry!	1 Replies 188 Views	Aug 27, 2018 by adf223
Radioactive isotopes and nonradioactive isotopes of an element react essentially identically. ... Started by appyboo	1 Replies 174 Views	Aug 27, 2018 by KKcool
Which is a corrosive poison? A) carbon monoxide B) potassium nitrite C) methyl alcohol D) ... Started by j.rubin	1 Replies 75 Views	Aug 27, 2018 by cuttiesgirl16
When the following equation is balanced, the coefficients are ________. C8H18 + O2 CO2 + H2O ... Started by TVarnum	3 Replies 92 Views	Aug 27, 2018 by covalentbond
Nuclear science has saved many more lives than have been destroyed by nuclear bombs. Indicate ... Started by cabate	1 Replies 72 Views	Aug 27, 2018 by aham8f
Food additives are used A) as antioxidants. B) to enhance or improve the taste of food. C) as ... Started by Lobcity	1 Replies 83 Views	Aug 27, 2018 by guyanai