Across
- 5. more energy is released when the products form than is required to break the bonds in the reactants.
- 6. more energy is required to break the bonds of the reactants than is released when products form.
- 9. a starting substance in a chemical reaction.
- 12. law that states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical
- 13. a characteristic of matter that can be observed as it changes to a different type of matter.
- 16. a characteristic of matter that can be observed or measured without changing the identity of the matter
- 17. energy the energy released when atoms form bonds.
Down
- 1. a process in which atoms of one or more substances rearrange to form one or more new substances.
- 2. a change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties.
- 3. the ability of a type of matter to burn easily.
- 4. law that states that energy is always transferring, but energy is not created or destroyed.
- 7. occurs when substances react with oxidizing agents, changing it to a new substance.
- 8. a number placed in front of an element symbol or chemical formula in an equation.
- 9. occurs when a substance reacts with another substance, changing it into a new substance.
- 10. the mass per unit volume of a substance.
- 11. the amount of matter in an object.
- 14. a substance produced by a chemical reaction.
- 15. the amount of space a substance takes up.