11 15
Atoms were thought to be particles that could not be divided up into smaller particles.
By 1898, the electron had been discovered and the plum-pudding model of an
atom was proposed.
The results from experiments after 1898 led to the nuclear model.
Compare the position of the subatomic particles in the plum-pudding and nuclear
models.
[4 marks]

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet