Select the one substance that is not a rock.
Syenite is a solid. It is not a pure substance. Phyllite is not a pure substance. It is a solid. Burlap is made in a factory. It is a solid.
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.
Syenite is a rock.
Burlap is made in a factory. But all rocks are formed in nature.
So, burlap is not a rock.
Phyllite is a rock.