Bath Bomb Crossward

7. something that can change or be changed in an experiment
8. the amount of matter in a given space, often measured as mass per unit of volume
11. a naturally occurring mineral compound of magnesium and sulfate, often used in baths to sooth sore muscles.
12. a system that allows both matter and energy to move in and out.
14. a characteristic or quality of something that helps identify or describe it
16. a substance that undergoes a chemical reaction to produce a product
17. a weak acid found in citrus fruits such as lemons and oranges, often used as a natural preservative in food and drinks

1. a system that does not let matter in or out, but energy (like heat or light) can still move in or out.
2. not able to dissolve in a liquid, such as sand in water
3. the physical form in which matter exists, such as solid, liquid, or gas
4. a group of two or more atoms chemically bonded together, such as water being made up of two hydrogen atoms and one oxygen atom
5. a change in the physical state of matter, such as ice melting into water or water boiling into steam
6. the ability of a substance to catch fire easily and burn
9. a process in which one or more substances are transformed into new substances with different properties
10. a white, crystalline powder often used in baking as a leavening agent to help dough rise.
13. a substance produced during a chemical reaction
15. the smallest unit of matter that still retains the properties of an element