Chemistry, 30.07.2019 11:30 jtaylor4061
Marco wants to investigate the chemical properties of sodium bicarbonate, or baking soda. he plans to carry out the tests below. test 1: mix a teaspoon of sodium bicarbonate into a cup of warm water to see if it dissolves. test 2: mix a teaspoon of sodium bicarbonate into a cup of vinegar to see if it fizzes. test 3: heat a teaspoon of sodium bicarbonate in the oven to see if its melting point is less than 400 degrees fahrenheit. which statement provides the best assessment of his tests? only test 3 will indicate a chemical property of sodium bicarbonate. tests 1 and 2 will show a physical property of the substance. only tests 1 and 2 will indicate chemical properties of sodium bicarbonate. test 3 will show a physical property of the substance. only test 2 will indicate a chemical property of sodium bicarbonate. tests 1 and 3 will show a physical property of the substance. only tests 1 and 3 will indicate chemical properties of sodium bicarbonate. test 2 will show a physical property of the substance.
Answers: 1
Chemistry, 22.06.2019 08:00, wizz4865
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
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Marco wants to investigate the chemical properties of sodium bicarbonate, or baking soda. he plans t...
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