Two chemicals react in an endothermic reaction. What can be known about this reaction?
When vinegar and baking soda react, the mixture becomes cold to the touch and a gas and a new liquid substance are formed.
What must occur in order for a chemical reaction to be specifically classified as endothermic instead of exothermic?
Which is an example of a chemical reaction?
When baking soda and vinegar react, the surface bubbles. What does this most likely indicate?
Cherylanne mixes together Chemical A and Chemical B in a test tube, forming Chemical C. The mixture instantly turns cool to the touch. She then adds Chemical D, and the reaction becomes hot and explodes.
Which is evidence that a chemical reaction has likely occurred?
Theresa creates an experiment where she mixes two red-colored substances together in a container and observes the solution slowly changing from red to blue for the next eight minutes. The solution becomes completely blue after eight minutes.
When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Which substance represents the precipitate?
Pedro wants to create a chemical reaction between oil and water. He adds oil to a beaker of water and notices that the liquids do not mix. He then shakes the beaker and the drops of oil become suspended through the water for a few moments before returning to their separate layers.
Did you find these answers helpful?