Describe how matter is classified into mixtures, pure substances, elements, and compounds.

The density of iron is 7.8 g/cm3 and that of aluminum is 2.7 g/cm3. using a balance, you find that a block of iron has the same mass as a block of aluminum. which block has the larger volume? question 15 options: you cannot tell from the information given. the volumes are the same. the iron block the aluminum block 2.) as water in an ice cube tray freezes, question 23 options: it absorbs energy from its surroundings. its surroundings absorb energy from it. it absorbs coldness from and releases energy to its surroundings. it only absorbs the coldness from its surroundings. it neither absorbs nor releases energy, because its temperature stays constant.