Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

exam 3

QuestionAnswer
1. What role does the atomic number play in the periodic table?
2. Which contributes more to an atom’s mass and to its size?
3. The mass number of an element is:
4. The atomic number of an element refers to:
5. What are the rows in the Periodic Table called?
6. Elements in the same ________ have similar chemical properties.
7. What happens to element properties across a period?
8. Relationship between max electrons in a shell and number of elements in a period?
9. Most abundant element on Earth?
10. Only stable family of elements?
11. Which particles are in the atomic nucleus?
12. Nuclei of the same element with different mass numbers are called:
13. Which radiation changes mass and atomic number most?
14. Why don’t protons fly apart in the nucleus?
15. What does C-14 represent?
16. What nuclear process powers the sun?
17. Half-life means:
18. Complete the decay: C-14 → ? + e⁻ + ν̅
19. Why is lead found in uranium ores?
20. Why do living bones have more C-14 than ancient bones?
21. What is a chemical bond?
22. Are atoms or molecules the building blocks?
23. How many atoms in Na₂SO₄?
24. How many different elements in C₆H₁₂O₆?
25. Why is rusting a chemical change?
26. Difference between an element and a compound?
27. Which element name is written first in a compound?
28. Formula for dihydrogen sulfide?
29. Electrons in the first and second shells?
30. Why does fluorine gain only one electron?
31. Relationship between unpaired valence electrons and bonds formed?
32. Which elements form ionic bonds?
33. Electronegativity difference in ionic bonds is:
34. Which elements tend to form covalent bonds?
35. How many covalent bonds does N₂ have?
36. For a strongly covalent bond, electronegativities should be:
37. Which is more polar: C–O or C–N?
38. What best describes H–O bonds in water?
39. What does concentration measure? Units?
40. Grams of NaCl needed for 15 L of a 3 g/L solution?
41. Molarity of 2 moles NaCl in 0.5 L solution?
42. Molecules in 0.5 mol sucrose?
43. How much water to make a 10 g/L solution using 20 g NaCl?
44. Balanced electrolysis of water equation?
45. Balanced ammonia production?
46. Balanced combustion of methane?
47. Balance: Fe + S → Fe₂S₃
48. Why must chemical equations be balanced?
49. Breaking/forming chemical bonds involve:
50. First step of most chemical reactions:
Created by: egortuno
Popular Physical Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards