I'm kinda in a rush but take your time!Thx!
1.What was Henri Becquerel studying when he accidentally discovered radioactivity?
A.photography
B.properties of black light
C.properties of X-rays
D.solar energy
2.When Marie Curie isolated uranium from pitchblende, she realized that the pitchblende was more radioactive than the uranium she had extracted. What did she conclude about her observations?
A.Pitchblende itself is a radioactive element
B.The pitchblende sample contained an unknown radioactive element
C.The pitchblende sample was defective
D.Pitchblende should be used as radiation therapy
3.Henri Becquerel's original hypothesis was that fluorescent minerals became excited by a solar energy and gave off X-rays. However, after he discovered uranium minerals emitted their own radiation without the help of solar energy, he abandoned his hypothesis. Why did Becquerel abandon his first hypothesis?
A.He was afraid of ridicule from the scientific community for being wrong
B.He found new evidence that didn't support his original hypothesis
C.He couldn't repeat the results in multiple experiments.
D.He couldn't make the experiment work, so he came up with a new plan
4.Marie Curie had many "firsts". Which of the following is not one of Marie Curie's firsts?
A.first female Nobel Prize winner
B.first female professor in the Faculty of Sciences
C.first to suggest that atoms can change
D.first to discover X-rays
My answers:
1.D
2.B
3.A
4.D
I just got 100%
1.C
2. B
3. B
4.D
I won't rush ANYONE but i really need help!
nobodyknows is right
100%
they win
everything
Yes, the answers are:
1.C
2.B
3.B
4.D
Yea they are correct
number 3 is b.
C
B
B
D
is correct i just got 100% on it!!!
that it is the question correctly because thy are confusing me.
answers:
1.D
2.B
3.A
4.D
answers
1.C
2. B
3. B
4.D
Anwers are
C
B
B
D
I just took a quiz
C
B
B
D
Just took it! 100% XD
Yep
C
B
B
D
is all 100!
Joe, yay, David, 😀, ~Kitty~, Derp, CrendyGal, and Rainbowsrule are all correct 😊.
so what was 3?
ANSWERS
C
B
B
D
100 percent :D
The answers are
C
B
B
D.
I took the test and got 100%
yes it totally works!!!
c
b
b
d
!!!!!!
C B B D Got a 100%
The answers are:
1.c
2.b
3.b
4.d
100% connection students
Thank you to every one who said the answers are
1:C
2:B
3:B
4:D
I just took the test and I got 100%
Thanks guys just got 100%
Yeah, it's C B B D
C
B
B
D is correct
Yup, it's correct, Thanks.
yeah, what they said. :D
1.C
2.B
3.B
4.D
1. C- properties of xrays
2. B- the pitchblende sample contained an unknown radioactive element
3. B- he found new evidence that didn't support his original hypothesis
4. D- first to discover xrays
C
B
B
D
100%!!!!
2020 is ruined by the coronavirus btw :(
I got a 100% as well.
Thank you guys! :3
1.C
2.B
3.B
4.D
these are 100% answers believe me I took the assessment
C
B
B
D
is 100% correct thx everyone ;)
C
B
B
D
100% correct!
C
B
B
D
∞ %!!!!!!!!!
Hey, thanks for the help, it was a 100%!
I guess it's CBBD
C
B
B
D
No lie this is right it got 100%
I just took the assessment for connections academy and got 100% 4/4.
Using the answers
C, B, B, D
I agree with 2 and 4 but not 1 and 30 Read this for 1 and 3.
http://www2.lbl.gov/abc/wallchart/chapters/03/4.html
For sure:
C
B
B
D
Thank you!
1. C
2. B
3. B
4. D
100%
c
b
b
d
1. C
2. B
3. B
4. D
110% Garentee (R.I.P. spelling)
Me coming 5 years after to use this🤣 the answers are;
C
B
B
D
c b b d lolololololool
really really really need help. have to get done by today
3.Henri Becquerel's original hypothesis was that fluorescent minerals became excited by a solar energy and gave off X-rays. However, after he discovered uranium minerals emitted their own radiation without the help of solar energy, he abandoned his hypothesis. Why did Becquerel abandon his first hypothesis?
A.He was afraid of ridicule from the scientific community for being wrong
B.He found new evidence that didn't support his original hypothesis
C.He couldn't repeat the results in multiple experiments.
D.He couldn't make the experiment work, so he came up with a new plan
4.Marie Curie had many "firsts". Which of the following is not one of Marie Curie's firsts?
A.first female Nobel Prize winner
B.first female professor in the Faculty of Sciences
C.first to suggest that atoms can change
D.first to discover X-rays
it is kinda important that i get everything right
C
B
B
D
Good job to whoever figured out the correct answer FIRST. Well done. By the way, I am a LEGIT ADMIN for Jiskha.com. I didn't create this page, but I have created other pages. I remember DrBob222 and i am awesome from one of pages. Burger from another.
i feel like the only students who use this site are connections students lol
YEEEEEEAAAAA BOIIIIIIIII (LOL IM WEIRD)
USE CBBD
CBBD! 100%!
You confused me and I only got 2 of 4
:(
C
B
B
D
Hope that helps!
Thank you “nobody knows” !
THANK U nobodyknows
ya know this site is so cool.People who just need some help if there in a hurry or if you just need to double check your answers there's almost always someone there to help.so thank you all for being such cool people.
so for my awesome dudes have a five dollar bill [̲̅$̲̅(̲̅5̲̅)̲̅$̲̅]