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Elements, Compounds and Mixtures
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The smallest Unit of matter is called an..A. Atom B. Element C. Particle D. Dot
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Element containA. more than 1 type of atom B. exactly 2 different atoms C. 1 single atom D. only 1 type of atom
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The element symbol H is forA. Helium B. Hydrochloric Acid C. Hydroxide D. Hydrogen
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A mixture isA. Difficult to separate B. impossible to separate C. Easy to separate
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A compound is two or more elements...A. helf together by a physical bond B. which are not bonded C. which are very weakly bonded D. held together by a chemical bond
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The compound Water (H20) containsA. 2 Oxygen atoms and 1 hydrogen atom B. 2 Hydrogen atoms and 2 oxygen atoms C. 2 Hydrogen atoms and 1 oxygen atom D. 1 Hydrogen Atom and 1 Oxygen Atom
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How can you tell if a chemical reaction has taken place?A. Change in temperature B. All of these C. Bubbles or fizzing D. A colour change
Elements, Compounds and Mixtures (Answer Key)
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The smallest Unit of matter is called an..A. Atom B. Element C. Particle D. Dot
-
Element containA. more than 1 type of atom B. exactly 2 different atoms C. 1 single atom D. only 1 type of atom
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The element symbol H is forA. Helium B. Hydrochloric Acid C. Hydroxide D. Hydrogen
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A mixture isA. Difficult to separate B. impossible to separate C. Easy to separate
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A compound is two or more elements...A. helf together by a physical bond B. which are not bonded C. which are very weakly bonded D. held together by a chemical bond
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The compound Water (H20) containsA. 2 Oxygen atoms and 1 hydrogen atom B. 2 Hydrogen atoms and 2 oxygen atoms C. 2 Hydrogen atoms and 1 oxygen atom D. 1 Hydrogen Atom and 1 Oxygen Atom
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How can you tell if a chemical reaction has taken place?A. Change in temperature B. All of these C. Bubbles or fizzing D. A colour change
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