Electrons | ||
#1 | What is electron affinity? | How likely an atom is to accept electrons |
#2 | What is electronegativity? | The ability of an atom to attract electrons during chemical reactions. |
#3 | What is the electronegativity trend? | Decreasing down the family, increasing from left to right along the periods. |
#4 | What is an element with an electronegativity difference smaller than 1.7? | The atom is mostly ionic. |
#5 | What is a polar covalent bond? | A molecule with unequal sharing of electrons. |
Forces | ||
#1 | What are van der Waal forces? | The weak attraction forces between covalent bonds. |
#2 | What is a dipole-dipole force? | The force between the positive and negative ends of two polar molecule. |
#3 | What do the weak attraction forces result in? | Relatively low melting and boiling points. |
#4 | What is a dispersion force also known as? | Induced dipole. |
#5 | What is solidity based on? | van der Waal forces |
Polarity | ||
#1 | What are polar and ionic compounds usually soluble in? | Polar substances. |
#2 | What is polarity determined by? | The shape of the molecule. |
#3 | What are the only substance non-polar compounds are soluble in? | Non-polar substances. |
#4 | If an molecule's electronegativity difference is between .4 and 1.7, what is it? | Polar covalent. |
#5 | If a molecule's electronegativity difference is 0, what is it? | Non-polar covalent. |
Covalent bonds | ||
#1 | What strength of bonds do covalent bonds have? | Strong |
#2 | What strength of attraction do covalent bonds have? | Weak |
#3 | What do solid covalent bonds arrange themselves in? | A crystal lattice |
#4 | If a molecule's electronegativity difference is bigger than .4, what is it? | Mostly covalent |
#5 | What do most covalent bonds exist as? | Gases? |
Random Review | ||
#1 | What is a covalent bond? | A bond where electrons are shared. |
#2 | What is an ionic bond? | A bond where electrons are given and take. |
#3 | What is an ion? | An atom with a charge. |
#4 | What is a positively charged particle? | Proton |
#5 | What is a negatively charged particle? | Electron |
Final Question | |
What is the formula for mass number? | Protons + Neutrons |