From the list below, identify which situation(s) contain chemical changes.

i) a pot of water is being heated on a stove. bubbles form and condensation appears on the lid of the pot.

ii) a translucent, blue copper (ii) sulfate solution is mixed with another solution and changes to a translucent lighter blue color.

iii) ammonium nitrate solid dissolves in water and feels very cold.

iv) red and blue paint are mixed together and the color purple appears.

Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color