Unit 10 Chemistry Lab
Sample Questions
1. In the chemical formula for ammonia, NH3, what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers?
(a) atomic mass of the element carbon (b) atomic number of the element carbon (c) number of neutrons in the element carbon (d) number of valence electrons in the element carbon 3. Insulation materials reduce heat loss because they (a) promote convection (b) block out the sun (c) reduce evaporation (c) are poor conductors In the food web shown, which of the 5.
(a) Mouse (b) Owl (c) Fox (d) Hawk Which system shows a transformation from chemical to electrical and light energy? (a) A display of fireworks in the night sky. (b) An avalanche rolls down a steep mountain (c) A car battery causes the headlights to shine (d) A candle burns and lights up the room 6. This experiment was set up to test the
4.
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What are the current benefits of having foods made from genetically modified crops? (b) (a) They improve farm profitability and make some farmers’ jobs easier. (b) They allow farmers to greatly increase the amount of crops produced. (c) They improve convenience for consumers, e.g. by creating foods with longer shelf lives. (d) They improve the nutritional quality of foods. 19. Most foods derived from genetically modified crops contain: (a) The same number of genes as food produced from conventional crops. (b) The same number of genes as foods produced from hybrid crops. (c) One or two additional genes. (d) (d) Hundreds of additional genes. 20. How long does it take to develop a new genetically modified crop? (a) Twenty years (b) Ten years (c) Five years (d) One
1. In the chemical formula for ammonia, NH3, what does the subscript 3 represent? (a) the number of ammonia molecules that will bond together (b) the number of nitrogen atoms in each molecule of ammonia (c) the number of nitrogen and hydrogen atoms in each molecule of ammonia (d) The number of hydrogen atoms in each molecule of ammonia 2. The diagram above shows a block from the periodic table. The number six represents the following consumers eats only producers?
(a) atomic mass of the element carbon (b) atomic number of the element carbon (c) number of neutrons in the element carbon (d) number of valence electrons in the element carbon 3. Insulation materials reduce heat loss because they (a) promote convection (b) block out the sun (c) reduce evaporation (c) are poor conductors In the food web shown, which of the 5.
(a) Mouse (b) Owl (c) Fox (d) Hawk Which system shows a transformation from chemical to electrical and light energy? (a) A display of fireworks in the night sky. (b) An avalanche rolls down a steep mountain (c) A car battery causes the headlights to shine (d) A candle burns and lights up the room 6. This experiment was set up to test the
4.
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What are the current benefits of having foods made from genetically modified crops? (b) (a) They improve farm profitability and make some farmers’ jobs easier. (b) They allow farmers to greatly increase the amount of crops produced. (c) They improve convenience for consumers, e.g. by creating foods with longer shelf lives. (d) They improve the nutritional quality of foods. 19. Most foods derived from genetically modified crops contain: (a) The same number of genes as food produced from conventional crops. (b) The same number of genes as foods produced from hybrid crops. (c) One or two additional genes. (d) (d) Hundreds of additional genes. 20. How long does it take to develop a new genetically modified crop? (a) Twenty years (b) Ten years (c) Five years (d) One