Chemistry, 04.05.2020 22:32 jlluminate5635
Question 1: Which is not a clue that a chemical change has happened?
A. new substance is formed B. temperature change C. size change D. gas is produced
Question 2: Which of the following represents chemical change?
A. wood burning B. ice freezing C. sugar dissolving D. wood being sanded
Question 3: Which of the following food changes represents a physical change?
A. toasting bread B. baking a cake C. making chocolate milk D. cooking an egg
Question 4: Which of the following is an example a chemical change?
A. water evaporating B. melting ice C. food rotting D. boiling water
Answers: 3
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In saturated organic compounds, all the bonds between carbon atoms are called?
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Identify and describe the three ways that mutations affect organisms.
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In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit
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Chemistry, 22.06.2019 06:00
An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g
Answers: 3
Question 1: Which is not a clue that a chemical change has happened?
A. new substance is forme...
A. new substance is forme...
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