Across
- 3. orbitals with different energies, shapes, etc., than the component atomic orbitals
- 8. is the measure of bond strength in a chemical bond
- 9. a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms
- 11. the ratio of moles of one substance to the moles of another substance in a balanced equation
- 12. also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms
- 13. mass of a given substance (chemical element or chemical compound) divided by the amount of substance
- 15. a chemical compound composed of ions held together by electrostatic forces termed ionic bonding
- 17. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
- 19. valence electrons are represented by dots placed around the chemical symbol.
- 23. in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete
- 26. percent by mass of each element present in a compound
- 27. mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations
- 28. a molecule in which a concentration of positive electric charge is separated from a concentration of negative charge.
- 30. a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself
- 31. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
- 33. reaction which a hydrocarbon reacts with oxygen to produce carbon dioxide and water.
- 34. the sum of atomic masses of all atoms in a formula, regardless of whether or not the compound is molecular
- 35. a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
- 36. chemical reaction in which two or more simple substances combine to form a more complex product
- 38. defined as the distance between the centers of two covalently bonded atoms
- 40. a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
- 41. refers to the number of lone pairs or bond locations around a particular atom in a molecule
- 42. the lowest whole number ratio of ions represented in an ionic compound
Down
- 1. is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
- 2. a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds
- 4. reactant in a chemical reaction that remains when a reaction stops
- 5. a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds
- 6. Uses words to describe chemical reactions
- 7. in chemistry, a separation of electric charge
- 10. contains exactly 6.022 × 10^23 entities
- 14. substance composed of exactly two different elements
- 16. Ions which can have lots of oxidative states
- 18. the concept of mixing atomic orbitals into new hybrid orbitals
- 20. a type of chemical bond where two atoms equally share a pair of electrons with each other
- 21. a solid formed from a solution
- 22. a formula that shows the arrangement of atoms in the molecule of a compound
- 24. a type of chemical bond where a pair of electrons is unequally shared between two atoms.
- 25. usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants
- 29. chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell
- 32. a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers
- 37. the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent
- 39. a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions