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Read the text and decided which chemical reaction experiment is being described. During this experiment, two white solids were combined in a bag. A red liquid was then added to them. All of the chemicals began fizzing and creating gas. The white solids turned into a yellow foam and became very warm to the touch. The title of this lab was: Chemical Reactions with Calcium Chloride, Baking Soda, and Phenol Red The Cooking Lab Chemical Reactions with Sodium and Water Chemical Reactions with Baking Soda and Vinegar Read the text and decided which chemical reaction experiment is being described. During this experiment, a purple liquid was added to another set of chemicals in a chemical tray. The chemicals in the chemical tray were ammonia, baking soda, and vinegar. All of these chemicals experienced a color changed when added with the purple liquid. The title of this lab was: Chemical Reactions with Calcium Chloride, Baking Soda, and Phenol Red The Color Change Lab Chemical Reactions with Cabbage Juice The Mixology Lab Which chemical reaction lab is being described? During this experiment, ammonium thyocianate and barium hydroxide were added together in a flask. A stopper was placed on top of the flask and the two chemicals were mixed together. As they mixed, the two solids became a liquid, produced a gas, and became very cold. The title of this lab was: Chemical Reactions with White Flakey Solids Chemical Reactions with Cold Liquids The Barium Hydroxide Change Freezer Flask Mrs. Ruble was doing a demonstration in class. She began boiling a beaker of water on a hot plate. Over a period of 5 minutes, students observed steam rising from the beaker and the level of water in the beaker had reduced from 200mL to 100mL. This isevidence of: a chemical change no change has occurred a change in the state of matter there's no way to know what has occurred During a lab experiment, two students observed a faint glow in the beaker. Their substance began to change color and there was a slight odor detected.They concluded that they had just observed: a new element being formed a chemical reaction an ionic bond between two covalent atoms How many chemical symbols (elements) are represented in the following formula: AgHNCaOPbCu 1 7 11 4 Mr. Bellman was doing an experiment. He mixed two substances together in a beaker and noticed that the beaker became very cold. Cold enough to form ice crystals on the outside of the beaker. Mr. Bellman concluded that: No type of reaction occurred This may be evidence of a chemical reaction A physical change occurred He just discovered how freezers work Mr. Bellman made some Kool-aid at home last weekend. As he mixed the Kool-aid, he noticed the water changed colors from clear to red. Since the water changed colors, Mr. Bellman knows: a chemical reaction did not happen a chemical reaction happened he does not want red kool-aid anymore the water has changed into a brand new substance. |