Checkpoint 3 Flashcards Preview

CHM 109 > Checkpoint 3 > Flashcards

Flashcards in Checkpoint 3 Deck (18)
Loading flashcards...
1

Runs out first in a chemical reaction; limits the amount of product that can form

Limiting reactant

2

Does not get completely used up by the reaction; some is left over at the end of the reaction

Excess reactant

3

How do you find percent yield?

Actual/ideal x 100

4

How does Rutherford's model differ from Bohr's model?

Rutherford believed that electrons roam freely while Bohr had specific orbitals

5

Protons and electrons in nucleus; electrons occupy most of the space in an atom

Rutherford's model

6

Suggests that electrons are located in specific orbitals around the nucleus

Bohr model

7

How is Bohr's model different from the quantum model?

Quantum model has regions of electron density rather than electrons orbiting around the nucleus

8

Describes the size or distance of the orbital

Principle quantum number (n)

9

Describes the shape

Sublevel

10

What are the values of the sub levels?

s,p,d,f

11

How many orbitals does the s,p,d, and f sub levels have?

1,3,5,7

12

How many electrons can the s,p,d and f sub levels hold?

2,4,6,10,14

13

What is the trend for atomic radius?

decreases as you go left to right, increases as you go up and down

14

What is the trend for ionization energy?

increases as you go left to right, decreases as you go up and down

15

Why does the atomic radius get larger as we move down a group?

more electrons occupy higher energy levels

16

why does the atomic radius get smaller as we move across a period?

Less attraction between the positive nucleus and electrons

17

How difficult it is to remove electrons

Ionization energy

18

Electrons in the outermost principal energy level

Valence electrons