Determine wheater each observation generally corresponds to physical change or chemical change
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Determine whether each observation generally corresponds to a physical change or a chemical change. The color of a substance changes over time. Chemical change Bubbles are produced upon mixing two solutions. Chemical change A liquid freezes into a solid. Physical change A solution heats up upon mixing with another. Chemical change A solid dissolves into water. Chemical change A precipitate is formed from two solutions. Chemical change
Susan H.
Determine whether each observation generally corresponds to a physical change or a chemical change. A liquid freezes into a solid. _________ Bubbles are produced upon mixing two solutions. __________ A precipitate is formed from two solutions. _________ A solution heats up upon mixing with another. ____________ A solid dissolves into water. __________ The color of a substance changes over time
Madhur L.
1) Determine whether each of the following represents a physical property or a chemical property, circle the correct answer: (8 points) (a) Vinegar has a pungent odor. Physical or Chemical property (b) Carbon cannot be decomposed. Physical or Chemical property (c) Sulfur is a bright yellow solid. Physical or Chemical property (d) Sodium chloride is a crystalline solid. Physical or Chemical property (e) Water does not burn. Physical or Chemical property (f) Mercury is a liquid at 25°C. Physical or Chemical property (g) Oxygen is not combustible. Physical or Chemical property (h) Aluminum combines with oxygen to form a protective oxide coating. Physical or Chemical property 2) State whether each of the following represents a chemical change or a physical change, circle the correct answer: (5 points) (a) A steak is cooked on a grill until well done. Physical or Chemical change (b) In the lab, students fire polish the end of a glass rod. The jagged edge of the glass becomes smooth. Physical or Chemical property (c) Chlorine bleach is used to remove a coffee stain on a white lab coat. Physical or Chemical property (d) When two clear and colorless aqueous salt solutions are mixed together, the solution turns cloudy and yellow. Physical or Chemical property (e) In the lab, a student cuts a 20-cm strip of magnesium metal into 1-cm pieces. Physical or Chemical property
Jital V.
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