In which of the following will the density increase? Group of answer choices

An iron bar is heated.

A lead weight is moved from sea level to the top of a high mountain.

A sample of water is frozen.

A diamond is submerged in water.

A sample of chlorine gas is compressed.

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

Compare and contrast physical changes with chemical changes.

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction