It's a substance
a mixture is not a substance
Dry ice is solid carbon dioxide, CO2. It is a pure substance, a chemical compound. It sublimes at room temperature goinf from solid to gas without turning into a liquid.
A mixture
Carbon Dioxide, a mixture of the elements carbon and oxygen, mixed creates a harmful compound to our enviorment. Nitrous oxides, water vapor, carbon monoxide, unburned hydrocarbons.
Quartz is a compound. There are many different types of quartz, each containing different materials.
The "kind" called Carbon Monoxide. In other words, you don't get Carbon Dioxide. (You need two atoms of Oxygen to get Carbon Dioxide, hence the "di" part.)
When glucose is added to yeast in solution, the enzymes inside it turn the mixture into ethanol and carbon dioxide, so, for your question, carbon dioxide. It also respires normally (aerobically) and then too produces carbon dioxide.
Carbon dioxide is an inorganic gas; but carbon dioxide can exist as a water solution.
Aluminum contains only one kind of atom.
a substance
Carbon Dioxide
covalent