Select the one substance that is not a rock.
Granodiorite is not made by living things. It is a solid. A brick is made in a factory. It is not a pure substance. Limestone is formed in nature. It is not a pure substance.
Rocks are made of minerals. Here are some properties of rocks:
They are solid.
They are formed in nature.
They are not made by living things.
They are not pure substances.
Compare the properties of each substance to the properties of rocks. Select the substance whose properties do not match those of rocks.
Granodiorite is a rock.
A brick is made in a factory. But all rocks are formed in nature.
So, a brick is not a rock.
Limestone is a rock.