Question

17. Dalton's idea that atoms cannot be divided into smaller parts was disproved by the discovery of the (1 point)

Answer 1

18. the description of the structure of the atom is called the

Answer 2

24. Why is photosynthesis an example of a chemical reaction?

Answer 3

25. How does everyday activities like driving a car and using electricity lead to global warming?

Answer 4

Please help me! Last test of the semester!!

Answer 5

Do one queston at a time, otherwise people get confused.

Answer 6

Make a question then post one question in it

Answer 7

The answer to your first question would be electrons.

Answer 8

Driving a car burns fossil fuels in which releases CO2(carbon dioxide). CO2 floats into the atmosphere and STAYS there. Then when heat radiated by the sun to Earth enters the atmosphere it can't escape due to the CO2 in the atmostphere acting as a blanket and keeping the heat in. This causes warming of the Earth on a global scale, aka global warming

Answer 9

@mnmecom Are you seeing these?

Answer 10

yes, thank you @ShadowLegendX

Answer 11

Photosynthesis turns carbon dioxide and water into oxygen and carbohydrates, therefore a chemical change occurs.

Answer 12

24) It turns carbon dioxide and water into oxygen and carbohydrates,. Most things in life have chemical reactions to them, pretty much everything.

Answer 13

@ShadowLegendX tag team champs lol

Answer 14

haha yeah :)

Answer 15

okay, thank you @ShadowLegendX @alphadxg

Answer 16

The nuclear model states that the atom consists of a dense positive center called the nucleus and is orbited by negatively charged electrons.

The nuclear model of the atom was first proposed by New Zealand scientist Ernest Rutherford while working in England under J. J. Thomson.

Scientists have shown that the atom consists of three sub atomic particles, the proton, the neutron and the electron.

Answer 17

How many valence electrons does an atom of rubidium(RB, atomic number 37) have?
one
five
six
thirty-seven

Answer 18

A (electrons in outer shell -> Rb is Kr 5s1 -> 1 electron in its 5s subshell)

Answer 19

thanks @ShadowLegendX

Answer 20

I always learnt that this idea was disprove by Radioactivity, nuclear fission to be precise.

Answer 21

Using this website for malpractices like cheating is against its CODE OF CONDUCT. Kindly refer from such activities.
http://openstudy.com/code-of-conduct

Answer 22

ARE YOU REFERRING TO ME SIR?