Answer: Aluminium
Explanation: Aluminium metal has a lower density than copper. So, for the same volume of metal used to build a model airplane, the aluminium plane would be very lightweight while that of copper would be heavy. The lightweight airplane will fly easily.
True, all matter has mass and takes up space.
Answer:
9 is clay, silt, sand in that order
Explanation:
Substances that are not chemically bonded are mixtures.
Since it’s asking for chemical to thermal, B.
