Which of the following represents a chemical change when using bread in a meal? F. Removing the crust of the bread when making a sandwich.

G. Placing the bread in a toaster to make toast and applying butter on it afterwards

H. Cutting the bread in half to make two sandwiches

J. Placing mayonnaise, ketchup, and mustard on the bread before the meat

Well toasting it makes it a solid so that’s a chemical change that happens! Hope this helped!

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

a=d/t

a="triangle"v/t

explanation:

a = acceleration