Chemistry Review 1: Question Preview
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Which of the following describes a mixture? |
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| 1) Formed from two or more substances chemically combined. | 2) Made up of two or more substances joined in a specific ratio. | 3) Made up of two ore more substances that keep their own identities. | 4) Can be separated only by chemical means. | |
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Which of the following is an alkali metal? |
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| 1) Aluminum | 2) Potassium | 3) Gold | 4) Zinc | |
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Which of the following is composed of elements combined in a specific ratio? |
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| 1) solution | 2) colloid | 3) suspension | 4) compound | |
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Which of the following is true of particles in solution? |
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| 1) Particles scatter light. | 2) Particles cannot be filtered out. | 3) Particles settle out. | 4) Particles are large. | |
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What element does not follow the patterns of the rest of the periodic table? |
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| 1) Helium | 2) Sodium | 3) Potassium | 4) Hydrogen | |
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Which of the following does NOT describe a suspension? |
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| 1) Particles are soluble. | 2) Particles settle out over time. | 3) Particles can be seen. | 4) Particles scatter light. | |
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Elements in a family/group on the periodic table |
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| 1) are always in the same phase of matter. | 2) have the same atomic number. | 3) have similar properties. | 4) form a row on the periodic table. | |
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Which of the following increases the solubility of a gas in a liquid? |
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| 1) Decreasing the amount of liquid. | 2) Decreasing the temperature. | 3) Stirring. | 4) Increasing the temperature. | |
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Which element has the atomic number of 12? |
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| 1) Carbon | 2) Magnesium | 3) Zinc | 4) Hydrogen | |
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On the periodic table, magnesium and chlorine are located in period 3. What is one difference between the two elements? |
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| 1) Magnesium atoms combine more easily with other atoms in Group 2. | 2) Chlorine and magnesium atoms will each combine with the same elements to form compounds. | 3) Chlorine atoms have more electrons in their outer shell than magnesium atoms. | 4) Magnesium atoms are more reactive than chlorine atoms. | |
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