IF CORRECT ILL GIVE BRAINLIEST My favorite student mixes a white solid and a clear liquid together. Which observations are evidence that a chemical reaction has occurred?

A. The mixture begins to bubble and fizz
B. The solid disappears into the liquid
C. The mixture begins to smoke
D. The mixture becomes orange

In order to complete this lab. you will need to be familiar with some common chemistry terms. complete the chemical change puzzle and list the relevant terms and their meaning below a. rectant b. product c. supernate

Which is true about metals used for jewelry, such as platinum and gold? a. they have low flammability. b. they have low reactivity. c. they have high flammability. d. they have high reactivity.

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost