WorksheetsChemistry 1st Semester Interim Review
Total questions: 20
Worksheet time: 10mins
Use the information and models to answer the following question. Models help scientists visualize concepts. Five models are shown. Which of the following models would represent the MOST reactive nonmetals?
Models 1 and 3
Models 4 and 5
Model 1, 2, and 3
Models 1, 3, and 4
What is the ion configuration of the chlorine ion, Cl⁻?
1s²2s²2p⁶3s²3p³
1s²2s²2p⁶3s²3p⁴
1s²2s²2p⁶3s²3p⁵
1s²2s²2p⁶3s²3p⁶
Use the model to answer the following question. Which of the following explanations are TRUE regarding the mass number and identity of Element C?
Element C has only a different identity than elements A and B
Element C has only a different mass number than elements A and B
Element C has the same mass number and identity as elements A and B
Element C has both a different mass number and identity than elements A and B
Which of the following statements must be TRUE regarding nuclear fusion?
The mass of the produced atom is less than the mass of the original nuclei and the identity is the same.
The mass of the produced atom is less than the mass of the original nuclei and the identity is different.
The mass of the produced atom is greater than the mass of the original nuclei and the identity is different.
The mass of the produced atom is greater than the mass of the original nuclei and the identity is the same.
Use the information to answer the following question. What is the identity of the unknown element and why is the color emitted?
Strontium, because electrons move from ground state to excited state to emit light
Strontium, because as electrons fall back from an excited state to ground state they emit light
Potassium, because electrons move from a ground state to an excited state to emit light
Potassium, because as electrons fall back from an excited state to ground state they emit light
Use the information and table to answer the following question. A sample of phosphorus was isolated and analyzed to determine the percent abundance of each isotope. The results are recorded in the table.
When the masses of 29, 31, and 32 are added and divided by 3 the average is closest to 31.
Phosphorus-31 has the greatest percent abundance so the average atomic mass should be 31.
The mass of phosphorus-31 is between phosphorus-29 and phosphorus-32. The average atomic mass is in the middle of the isotope’s masses.
All isotopes of phosphorus have 15 protons and 16 neutrons. When protons and neutrons are added together, the average mass would be 31.
Use the table to answer the following question. Based on the percent abundance, what is the identity of the unknown substance?
Technetium because the average atomic mass is close to 99 amu.
Vanadium because 16, 17, and 18 add together for a total mass of 51 amu.
Chlorine because the average of 16, 17, and 18 is 17 which is the atomic number of Chlorine.
Oxygen because the isotope with the greatest percent abundance is close to its average atomic mass.
Use the table to answer the following question. Which atoms in the table are the same element and with what reasoning?
Atoms 1 and 2, because they have the same number of protons.
Atoms 2 and 3, because they have the same number of electrons.
Atoms 1 and 3, because the sum of all subatomic particles are equal.
All atoms are the same because they have the same number of neutrons.
Use the models to answer the following question. Which model recognizes the merit of an atom having a dense, positive nucleus that is surrounded by mostly empty space?
J.J Thomson
Rutherford
Bohr
Current Model
Use the models to answer the following question. How does the current model show improvement over the previous models of the atom?
The current model shows protons inside the nucleus.
The current model shows electrons outside the nucleus.
The current model shows protons have a positive charge.
The current model shows electrons in s,p,d,f energy levels.
Would neon (Ne) normally be expected to form compounds?
No, because neon needs six electrons to fill its outermost level.
Yes, because neon needs six electrons to fill its outermost level.
No, because neon has eight electrons in its outermost level and is unreactive.
Yes, because neon has eight electrons in its outermost level and is unreactive.
What is the common oxidation state of the alkaline earth metals (group 2)?
+2 because they are likely to gain two electrons.
+2 because they are likely to lose two electrons.
-2 because they are likely to gain two electrons.
-2 because they are likely to lose two electrons.
Which of the following elements are in order, from lowest to highest, for ionization energy?
S, F, O
S, O, F
F, S, O
F, O, S
Which of the following elements has the lowest ionization energy?
Ne because it is stable with eight valence electrons.
P because it is a nonmetal that will gain three electrons to obtain an octet.
Ca because it is a small metal atom and can hold onto its electrons tightly.
Ba because it is a large metal atom that will easily lose two valence electrons.
Which halogen is more reactive, chlorine (Cl) or bromine (Br)?
Cl, because it has a smaller atomic radius.
Br, because it has a smaller atomic radius.
Cl, because it has a lower electronegativity value.
Br, because it has a lower electronegativity value.
Use the information and table to answer the following question. Four students are tasked with comparing two atoms using a periodic trend. Which student's statement is correct?
student 1
student 2
student 3
student 4
Use the information and models to answer the following question. A group of students are trying to design an electrical material. The models are options of substances that the students could use. Which substances should the students use if they are trying to design an electrically conductive material?
Models A and B because the majority of materials on Earth are made of these.
Models A and C because they contain ions so they can conduct electricity.
Models B and C because gases and metals can conduct electricity.
Models A, B, and C because all compounds can conduct electricity.
Use the images to answer the following question. Which of the following explanations correctly describes the materials?
Plastic polymers used in bottles are short molecules that create a non-flexible structure.
Plastic polymers used in bottles are long molecules that create a very flexible structure.
Calcium carbonate is a short molecule that creates a very flexible structure.
Calcium carbonate is a long molecule that creates a non-flexible structure.
Use the data table to answer the following question. What type of bond would be formed between hypothetical elements X and Y in the compound XY based on their electronegativity difference?
Nonpolar covalent because the difference in electronegativity is greater than 1.7.
Nonpolar covalent because the difference in electronegativity is greater than 0.4, but less than 1.7.
Polar covalent because the difference in electronegativity is greater than 0.4, but less than 1.7.
Ionic because the difference in electronegativity is greater than 0.4, but less than 1.7.
What type of bond would you predict to be formed between new elements located at the bottom of columns E and G?
Ionic, because element E is a metal and bonds with G, a nonmetal, to combine in a 1:1 ratio.
Ionic, because element E is a metal and bonds with G, a nonmetal, to combine in a 1:7 ratio.
Nonpolar covalent because element E is a metal and bonds with G, a nonmetal, to combine in a 1:1 ratio.
Nonpolar covalent because element E is a metal and bonds with G, a nonmetal, to combine in a 1:7 ratio.
