Imagine that you were in charge of creating a red, purple and green fireworks display for the 4th of July. Name a combination of compounds that you could use. This is for flame testing in Chem.

Which metal exist in liquid state and can be cut with knife ?

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?