Answer:
1. A substance made up of atoms from two or more elements that are chemically bonded together, hydrogen carbonate aka baking powder
2. A pure substance made of only one kind of atom, aluminum
3. 2 or more substances physically combined, salt water
4. used to describe substances uniform in composition; components are distributed evenly throughout the mixture, salt water
5. used to describe substances non-uniform in composition; not evenly mixed,
Soup
Step-by-step explanation: