Across
- 4. of conservation mass - the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
- 7. - is a reaction in which a compound breaks down into two or more simpler substances
- 10. - are used in all chemical equations to show the relative amounts of each substance present
- 11. replacement - a chemical reaction in which one element is substituted for another element in a compound, generating a new element and a new compound as products.
- 12. bond - the interatomic linkage that results from the sharing of an electron pair between two atoms.
Down
- 1. - is the process by which one or more chemical reactions are performed with the aim of converting a reactant
- 2. - tell you the number of. atoms of that element
- 3. of a mole - equal to 6.02214179×1023 atoms, or other elementary units such as molecules.
- 5. - the species formed from chemical reactions.
- 6. replacement - reaction occurs when parts of two ionic compounds are exchanged, making two new compounds
- 8. bond - formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
- 9. - a substance that takes part in and undergoes change during a reaction.