Physics

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Cellular pH is kept near a value of seven, due to the action of: a. salts b. buffers c. acids ... Started by stephzh	3 Replies 121 Views	Jul 27, 2018 by meow1234
Substances that are _____ give up hydrogen ions when they dissolve in water. a. basic b. acidic ... Started by joblessjake	1 Replies 128 Views	Jul 27, 2018 by Ashley I
In the periodic table, symbols for the elements are arranged according to _____. a. size b. ... Started by captainjonesify	1 Replies 110 Views	Jul 27, 2018 by cloud
The measure of an atom's ability to pull electrons away from another atom is called _____. a. ... Started by Anajune7	1 Replies 318 Views	Jul 27, 2018 by chevyboi1976
When dissolved in water, a(n) _____ donates H+; a(n) _____accepts H+. a. acid; base b. base; ... Started by SO00	3 Replies 167 Views	Jul 27, 2018 by sarah_brady415
What is the process in which a nucleus of an atom breaks up, emitting subatomic particles and/or ... Started by mwit1967	1 Replies 94 Views	Jul 27, 2018 by yasmina
Molecular oxygen is composed of two oxygen atoms that share four electrons. How many covalent bonds ... Started by schs14	1 Replies 181 Views	Jul 27, 2018 by BUTTHOL369
Sodium (Na) atoms often lose the single electron that is in their outermost shell. How does losing ... Started by Deast7027	1 Replies 185 Views	Jul 27, 2018 by rosiehomeworddo
Water molecules consist of one oxygen atom and two hydrogen atoms. In these covalent bonds, the ... Started by Shelles	3 Replies 293 Views	Jul 27, 2018 by cpetit11
Which object has the most intense sunlight on it? a. Mercury b. Venus c. Earth d. ... Started by Mr.Thesaxman	1 Replies 151 Views	Jul 27, 2018 by Sassygurl126
The daytime surface temperature of Mercury is higher than Earth's Moon's surface temperature because ... Started by formula1	1 Replies 164 Views	Jul 27, 2018 by Sweetkitty24130
Which of the objects below has an atmosphere consisting mostly of carbon dioxide? a. Earth b. ... Started by sjones	1 Replies 142 Views	Jul 27, 2018 by yeungji
As seen from Earth and the Hubble Space Telescope, Mars shows a. a reddish color. b. dark ... Started by lunatika	3 Replies 264 Views	Jul 27, 2018 by samiel-sayed
Which Terrestrial planet has the combination of most rapid rotation, liquid interior, and strongest ... Started by elizabeth18	1 Replies 77 Views	Jul 27, 2018 by fffftttt
____________________ is the molecule most responsible for the greenhouse effect on Venus and Earth. ... Started by LaDunn	1 Replies 109 Views	Jul 27, 2018 by fauacakatahaias
The size of the volcanoes on Mars indicate that Mars has a(n) ____________________ crust than Earth. ... Started by jCorn1234	1 Replies 139 Views	Jul 27, 2018 by jxjsniuniu
Which terrestrial planet orbits the Sun in 88 Earth days? What will be an ideal ... Started by futuristic	3 Replies 148 Views	Jul 27, 2018 by Fayaz00962
The terrestrial planet with the most effective greenhouse effect is ____________________. Fill in ... Started by yoroshambo	1 Replies 85 Views	Jul 27, 2018 by adf223
The two moons of Mars are known as ____________________ and ____________________. Fill in the ... Started by JGIBBSON	1 Replies 69 Views	Jul 27, 2018 by IRincones
The atmosphere of Mars primarily consists of ____________________. Fill in the blank(s) with ... Started by mp14	1 Replies 76 Views	Jul 27, 2018 by Fayaz00962
The terrestrial celestial object _________________ is most like Mercury. Fill in the blank(s) ... Started by scienceeasy	3 Replies 45 Views	Jul 27, 2018 by amit
Lobate scarps are believed to have formed on Mercury when its interior cooled and shrank. a. True ... Started by beccaep	1 Replies 117 Views	Jul 27, 2018 by ms_sulzle
Venus is very hot because its atmosphere is rich in carbon dioxide. a. True b. False Indicate ... Started by biggirl4568	1 Replies 104 Views	Jul 27, 2018 by mochi09
Radar maps of Venus show impact craters. a. True b. False Indicate whether the statement is ... Started by soccerdreamer_17	1 Replies 91 Views	Jul 27, 2018 by patma1981
The absence of folded mountain ranges on Mars suggests that it has been subjected to plate ... Started by saraeharris	3 Replies 76 Views	Jul 27, 2018 by cpetit11