Which of the following is an example of a chemical change?
a. ice melting
c. pounding gold into a coin
b. milk souring
d. a puddle of water evaporating

How will the emission of an alpha particle affect the atomic number of an atom

1) this is the structure in the cell nucleus that houses a cell's genetic information

Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c.vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false