Question 2
how do an ionic bond and a covalent bond differ?
a. an ionic bon...
Question 2
how do an ionic bond and a covalent bond differ?
a. an ionic bond is an attraction between oppositely charged ions. a covalent bond is a sharing of electrons between atoms.
b. a covalent bond is an attraction between oppositely charged ions. an ionic bond is a sharing of electrons between atoms.
c. there is no difference. both an ionic bond and a covalent bond share electrons.
d. there is no difference. both an ionic bond and a covalent bond are attractions between oppositely charged ions.
question 3
what is a bond between a positive and a negative ion called?
a. covalent bond
b. ionic bond
c. metallic bond
d. polar bond
question 4
water (h2o) is composed of the same elements as hydrogen peroxide (h2o2). why do these substances have different properties?
a. the atoms are arranged differently in each molecule.
b. the molecules are the same.
c. the atoms are the same.
d. water has more atoms than hydrogen peroxide.
question 5
what is the definition of a chemical bond?
a. a mutual attraction between the nuclei and electrons in two different atoms
b. a mutual attraction between the nuclei and electrons in a single atom
c. a mutual repulsion between the nuclei and electrons in two different atoms
d. a mutual repulsion between the nuclei and electrons in a single atom
Answers: 1
Physics, 21.06.2019 13:50
Which of the following describes something an engineer would probably do first when developing new technology meant to reduce ocean pollution? o a. evaluate the benefits and challenges of using certain chemicals to purify water. o b. research new scientific findings in regard to ocean cleanup. o c. identify the need to reduce ocean pollution. o d. research what has been done in the past to clean up oceanic oil residue.
Answers: 1
Physics, 21.06.2019 19:30
Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.
Answers: 1
Physics, 21.06.2019 22:00
Bob camina 200 m sur, luego trota 400 m suroeste, luego camina 200 m en una dirección 30? norte del este. a. dibuje una gráfica de los movimientos de bob. use una regla y transportador. b. use método gráfico y analíitico para hallar el desplazamiento total que bob recorrió. (magnitud y dirección) c. compare los resultados obtenidos por el método gráfico y analítico. (por ciento de diferencia).
Answers: 2
Physics, 22.06.2019 02:30
Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.
Answers: 2
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