Base is an aqueous substance that can accept protons. Some examples are: * baking soda * ammonia * sodium hydroxide * potassium hydroxide * barium hydroxide
Examples of substances that are elements include hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon
Salt
Carbon.
Foods are not pure substances.
medicines,fuel[for transportation],herbal tea
If, by "base", you mean an alkaline substance, then some examples of bases are the hydroxides (sodium hydroxide, potassium hydroxide, calcium hydroxide, etc.) and ammonia. Bases are often subcategorized as Lewis bases (substances that donate electrons, such as hydroxides) and Bronsted-Lowry bases (substances that accept protons, such as ammonia).
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Sweet substances.
salt
no they are not
Examples of substances that are elements include hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon
insulin and glucagon are examples of what type of substance
Salt
it dissolved completely into a liquid
some various biodegradable substances areCottonPaperWoodDead animals or plants