Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
masteringbiology
ch2H.W.
| Question | Answer |
|---|---|
| What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons? | 6 |
| Which of these refers to atoms with the same atomic number but different atomic masses? | These atoms are isotopes. |
| Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does fluorine have? | 10 |
| An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many protons does boron have? | 5 |
| the term for a solution with a low pH #,such as lemon juice or vinegar is... | acidic |
| the term for a solution that has an equal concentration of H+ OH- is... | neutral |
| the term for a solution with a high pH number, such as, ammonia or bleach is .. | basic |
| An acid is a compound that donates what to a solution? | H+ |
| the higher the pH number the higher concentration of what to a solution | OH- |
| a substance that accepts H+ when they are in excess and donates H+ when their concentration drops is called | a buffer |
| In a neutral solution the concentration of _____. | hydrogen ions is equal to the concentration of hydroxide ions |
| Each water molecule is joined to _____ other water molecules by ____ bonds. | four ... hydrogen |
| The unequal sharing of electrons within a water molecule makes the water molecule _____. | polar |
| The tendency of an atom to pull electrons toward itself is referred to as its _____. | electronegativity |
| A(n) _____ refers to two or more atoms held together by covalent bonds. | a molecule |
Created by:
colecoe