17ewebb
Badges: 3
Rep:
?
#1
Report Thread starter 1 year ago
#1
In their investigation, Rutherford and Marsden fired positively charged alpha particles at a very thin sheet of gold. Over a period of several months, the scientists made over 100 000 measurements. These measurements showed that:
• a very small number of alpha particles were deflected backwards from the gold foil.
Use the nuclear model to explain this experimental result.
0
reply
hl1525
Badges: 5
Rep:
?
#2
Report 1 year ago
#2
Alpha particles are positive and the of an atom has an overall positive charge. Therefore, they repel.

The results
1. Most alpha particles went straight through - atoms are mostly empty space
2. some deflected at small angle - the alpha particle repelled from the nucleus
3. some deflected straight back - same as above but even rarer because it had to hit the nucleus straight unlike the one above to come straight back whereas that one could hit the side and repel

hope this helps
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Poll: What factors affect your mental health most right now? Post-lockdown edition

Anxiousness about restrictions easing (30)
5.23%
Uncertainty around my education (67)
11.67%
Uncertainty around my future career prospects (66)
11.5%
Lack of purpose or motivation (75)
13.07%
Lack of support system (eg. teachers, counsellors, delays in care) (33)
5.75%
Impact lockdown had on physical health (30)
5.23%
Social worries (incl. loneliness/making friends) (61)
10.63%
Financial worries (36)
6.27%
Concern about myself or my loves ones getting/having been ill (23)
4.01%
Exposure to negative news/social media (34)
5.92%
Difficulty accessing real life entertainment (15)
2.61%
Lack of confidence in making big life decisions (57)
9.93%
Worry about missed opportunities during the pandemic (47)
8.19%

Watched Threads

View All