Chemistry chapter 2

Question 1

What is Daltons Atomic Theory 1?

Answer 1

All matter is composed of indivisible particles called atoms

Question 2

What is Daltons Atomic Theory 2?

Answer 2

All atoms of the same element are identical, in mass, properties and size

Question 3

What is Daltons Atomic Theory 3?

Answer 3

Atoms of the different elements combine in simple whole number ratios

Question 4

What is Daltons Atomic Theory 5?

Answer 4

Atoms cannot be created or destroyed in a chemical reaction in a closed experiment

Question 5

What is Daltons Atomic Theory 4?

Answer 5

Compounds are composed of molecules

Question 6

Law of multiple proportions

Answer 6

when 2 elements form a series of compounds, the ratio of the masses of the second elemnt that combine with 1g of the first element can always be reduced to small whole numbers

Question 7

what is a Chemical bond

Answer 7

forces that hold atoms in a compound

Question 8

Rutherford discovered

Answer 8

Gold foil experiment, protons

Question 9

modern chemistry foundation was laid by

Answer 9

George Bauer, Robert Boyle

Question 10

what are Isotopes?

Answer 10

Atoms with the same # of p+ but different # of n⁰
almost identical in chemical properties
in nature most elements contains mixtures of isotopes

Question 11

J.J. Thomson

Answer 11

Cathode rays(experiment) found e‐

Question 12

Antoine Lavoisier proposed

Answer 12

Law of conservation of mass

Question 13

What are the similarities and differences in the atomic models?

Answer 13

Plum pudding model, Rutherford model

Question 14

Heneri Becquerel

Answer 14

discovered radio activity

Question 15

what did Robert Millikan discover?

Answer 15

Charged oil drops, determined the magnitude of charge on an e‐, discovered mass of an e-

Question 16

what did Joseph Proust propose?

Answer 16

Law of definite proportion

Question 17

subatomic particles that contribute to the charge of an ion

Answer 17

protons and elctrons

Question 18

Have No Fear Of Ice Cold Beer (diatomic elements)

Answer 18

hydrogen, nitrogen, fluorine, oxygen, iodine, chlorine, and bromine.

Question 19

How does a Mass spectrometer work?

Answer 19

1. put in a sample of the element, 2. heat up the element, 3. beam the element with e- which ionizes the sample, 3. because charge has been added to it, it accelerates through 2 electric plates, 4. then a magnetic field bends the path of the depending of the mass of the isotope, 5. the detector then differentiates between the isotopes. The more ions that hit a certain part of the detector, that means that theirs more of that type of isotope in nature.