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Across 5. _________ compounds make up the main molecules where we get our energy 6. there are ___ categories of colloids 7. lemonade is this kind of mixture 8. ______ variables stay the same between every trial 10. the variable that is purposefully manipulated in an experiement 12. the category of matter with a pure fixed composition 14. this type of compound is formed between two nonmetals and are only present in small amounts 15. the second step in the scientific method is 16. the most precise measurement for solids is

Down 1. the only nutrient that may contain nitrogen 2. liquids are measured by 3. phytonutrients are nonessential chemicals produced by 4. fats, proteins, and carbohydrates are this type of molecule 9. vitamins and minerals are _____nutrients 11. this type of change cannot be reversed without another change of the same type 13. the most important nutrient