Compared to Osmium it is light, compared to Hydrogen it is heavy
non heavy. light.
It could be two items of the same size, but made out of different materials, for instance, one made of aluminum, and another made of iridium.
Visible light refelects very well from metallic aluminum. (See the link for more details on the physics of light reflections)
Light reflects when it hits aluminum foil. In fact, anything that you can see reflects light. Without the reflecting light reaching your eyes, you would not see it at all.
Perhaps a heavy purse makes a light heart, but a light purse doesn't necessarily make a heavy heart.
Light. Lighter stick equals faster hand speed for shooting for the most part.
Most likely you have seen a fake. Someone probably electroplated an ordinary 1976 d penny with silver or aluminum. Check its weight. Aluminum is light, less than 1/3rd the density of copper. Compare its weight with a copper penny. If the "aluminum" penny is just as heavy, then it is a electroplated penny. If it is light, then it is a complete fake.
10000 lbs
0.005
Aluminum is light, strong, and malleable.
non heavy. light.
IRON STRONGER.....ALUMINUM LIGHTER.....IRON IS HEAVY.....ALUMINUM WILL BREAK EASIER THAN IRON
Depends if it is steel or aluminum.
its light
They are lighter than the old Steel ones, but not as light as aluminum/composite ones.
it is heavy
It could be two items of the same size, but made out of different materials, for instance, one made of aluminum, and another made of iridium.