Trimester 1: Elements, Compounds, And Mixtures: Question Preview (ID: 30475)

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Nitrogen (N), phosphorous (P), arsenic (As), antimony (Sb), and bismuth (Bi) are elements in the same
a) period b) table c) group d) row
Which of the following accurately represents the location of the noble gases on the periodic table of elements?
a) Group 18 b) Period 1 c) Group 1 d) Period 1
Vegetable soup is a good example of a(n)
a) element b) heterogenous mixture c) mixture of elements and compounds d) homogeneous mixture
Water has the chemical formula
a) H2O b) CH4 c) CO2 d) O2
Which of the following does NOT represent an element?
a) Be b) B2 c) H2O d) B2 and H2O
Which of the following is TRUE about the element, selenium?
a) It has an atomic number of 34. b) It is a nonmetal. c) It is located in Group 16 on the periodic table. d) all of the above.
Which of the following behaves like a metal and a nonmetal?
a) lead (Pb) b) carbon (C) c) chlorine (Cl) d) tellurium (Te)
Sodium chloride is the scientific name for table salt. Based on the chemical formula NaCl, sodium chloride is a(n)
a) element b) compound c) mixture d) mixture of elements
The air we inhale is primarily composed of hydrogen (H2), oxygen (O2), carbon dioxide (CO2), and argon (Ar). It is therefore a
a) mixture of elements and compounds b) mixture of elements c) compound mixure d) heterogenous mixture
In which period does the element, bromine (Br), belong?
a) 4 b) 17 c) 35 d) none of the above
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