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The term ‘atom’ is derived from the Greek word for Select one: a. “combustible” b. “actionable” c. “indivisible” d. “electrical” Feedback The correct answer is: “indivisible”
Question 2
Correct Mark 1.00 out of 1. Flag question Question text Today, the atomic mass unit is defined with regard to the mass of the hydrogen atom. Select one: True False Feedback The correct answer is 'False'.
Question 3
Correct Mark 1.00 out of 1. Flag question Question text Chemical symbols can be classified into which domain? Select one: a.
Microscopic domain b. Symbolic domain c. Macroscopic domain Feedback The correct answer is: Symbolic domain
Question 4
Correct Mark 1.00 out of 1. Flag question Question text Which of the following characteristics do not describe an electron? Select one: a. Negative charge b. Has a mass that is 1000 times greater than a proton. c. Has the opposite charge of a proton. d. Smaller than an atom. Feedback The correct answer is: Has a mass that is 1000 times greater than a proton.
Question 5
Correct Mark 1.00 out of 1. Flag question Question text Select the appropriate state of matter defined by the following statement: Takes the shape of the container and fills the container’s volume.
b. They are the result of atoms sharing electrons. c. They are usually formed when metals and nonmetals combine. d. None of the above statements are true. Feedback The correct answer is: They are the result of atoms sharing electrons.
Question 8
Correct Mark 1.00 out of 1. Flag question Question text Which of the following statements are true about ions? Select one: a. A Ca2+^ ion results when a calcium atom has gained two electrons. b. Atoms become ions as a result of losing neutrons. c. Cations are positively charged atoms resulting from the loss of an electron. d. Anions are positively charge atoms resulting from the loss of an electron. Feedback The correct answer is: Cations are positively charged atoms resulting from the loss of an electron.
Question 9
Correct Mark 1.00 out of 1. Flag question Question text
A Roman numeral is included in parentheses in the name of compounds which have metals that can have multiple charges. Select one: True False Feedback The correct answer is 'True'.
Question 10
Correct Mark 1.00 out of 1. Flag question Question text Atoms of the same element with different masses are called Select one: a. Neutrinos b. Neutrons c. Gamma signatures d. Isotopes Feedback The correct answer is: Isotopes
Question 11
Correct Mark 1.00 out of 1. Flag question Question text Which of the following statements is false about Dalton’s atomic theory? Select one: a.
Question text The modern periodic table is arranged such that elements with similar properties are arrange in the same row and by increasing atomic number in the same column. Select one: True False Feedback The correct answer is 'False'.
Question 14
Correct Mark 1.00 out of 1. Flag question Question text Compounds are substances that cannot be broken down into their constituent parts. Select one: True False Feedback The correct answer is 'False'.
Question 15
Correct Mark 3.00 out of 3. Flag question Question text Which statements are true? Select one or more: a. Rutherford deduced that atoms are mostly empty space with a small, positively charged nucleus. b. The plum pudding model suggested that some positively charged matter existed and counterbalanced the charge of electrons.
c. Geiger and Rutherford observed that alpha particles deflect at various angles when fired at a thin sheet of gold foil. d. Protons exist around the nuclei of atoms. Feedback The correct answers are: The plum pudding model suggested that some positively charged matter existed and counterbalanced the charge of electrons., Rutherford deduced that atoms are mostly empty space with a small, positively charged nucleus., Geiger and Rutherford observed that alpha particles deflect at various angles when fired at a thin sheet of gold foil.
Question 16
Correct Mark 1.00 out of 1. Flag question Question text Which of the following is not an example of a compound? Select one: a. CO 2 b. CCl 4 c. CH 4 d. H 2 Feedback The correct answer is: H 2
Question 17
Incorrect Mark 0.00 out of 1. Flag question Question text Which of the following statements are true about:
b. c. d. Feedback The correct answer is:
