Q1 Midterm Practice Quiz - Chemistry

Maria is learning about chemistry in her science class. She wants to know what is the smallest unit of an element that retains the properties of that element?

• Molecule

• Atom

• Compound

• Ion

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DOK Level 1: Recall

Caleb is studying the periodic table and wants to know which of the following is a characteristic of Group 2 elements. Can you help him?

• They are noble gases.

• They are alkali metals.

• They are alkaline earth metals.

• They are halogens.

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DOK Level 1: Recall

Jasmine is studying the periodic table and wants to know how many protons are in an atom of carbon. Can you help her?

• 4

• 6

• 8

• 12

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DOK Level 1: Recall

Maria is organizing her chemistry notes and needs to identify which of the following elements is located in Group 2 of the periodic table. Can you help her?

• Sodium (Na)

• Magnesium (Mg)

• Chlorine (Cl)

• Argon (Ar)

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DOK Level 1: Recall

Jeremiah and Cameron are discussing the trend in electronegativity as you move down Group 2 in the periodic table. What do they conclude?

• It increases.

• It decreases.

• It remains constant.

• It fluctuates.

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DOK Level 2: Skill/Concept

Grace and Harper are discussing why beryllium (Be) and magnesium (Mg) have similar chemical properties. Can you explain the reason?

• They have the same atomic number.

• They are in the same period.

• They are in the same group.

• They have the same number of neutrons.

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DOK Level 2: Skill/Concept

Luna and Ethan are conducting an experiment to study the solubility of Group 2 hydroxides in water. Which of the following statements is true about their solubility?

• Solubility decreases down the group.

• Solubility increases down the group.

• Solubility remains constant down the group.

• Solubility fluctuates down the group.

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DOK Level 2: Skill/Concept

During a chemistry class experiment, Ava mixed a solution of calcium chloride with sodium carbonate. Predict the type of precipitate formed.

• Calcium carbonate

• Sodium chloride

• Calcium sulfate

• Sodium carbonate

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DOK Level 3: Strategic Thinking

Turk and Jasmine are conducting an experiment to compare the electronegativity of Group 2 elements using their solubility in water.

• Measure the pH of each solution.

• Measure the temperature change of each solution.

• Measure the amount of precipitate formed when mixed with a common anion.

• Measure the color change of each solution.

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DOK Level 3: Strategic Thinking

Cameron and Maria are discussing which element would have a higher electronegativity: beryllium (Be) or barium (Ba)? Justify your answer.

• Beryllium, because it is higher up in Group 2.

• Barium, because it is lower down in Group 2.

• Beryllium, because it has a larger atomic radius.

• Barium, because it has a smaller atomic radius.

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DOK Level 3: Strategic Thinking