Atomic theory quiz 1

Question 1

AX4

Accepted Answer

tetrahedral (tetra = 4 faces)

Question 2

when is my birthday

Accepted Answer

17th, all day every day

Question 3

Dalton's Atomic Theory

Accepted Answer

All matter is made up atoms that cannot be created

Question 4

J.J. Thompson

Accepted Answer

Atoms are a positive sphere embedded with negative particles

Question 5

Atomic radius

Accepted Answer

Increases down a group, and Decreases across a period

Question 6

Vsepr Theory

Accepted Answer

Valence shell electron pair repulsion

Question 7

Isotopes

Accepted Answer

Atoms of the same element have diff. numbers of neutrons.

Question 8

Radioisotopes

Accepted Answer

relation to the radio

Question 9

James Chadwick

Accepted Answer

Discovered the neutron

Question 10

AX3

Accepted Answer

trigonal planar

Question 11

AX2

Accepted Answer

linear

Question 12

Conductivity

Accepted Answer

Only ionic bonds can conduct electricity.

Question 13

Non-Polar Molecules

Accepted Answer

Always Symmetrical, overall the molecule may be non-polar, bond dipoles cancelling each other out., A molecule may contain polar covalent bonds

Question 14

John Dalton

Accepted Answer

Matter is made of tiny invisible atoms, 1803

Question 15

Niels Bohr:

Accepted Answer

electrons were highly organized, Determined from the line spectrum of hydrogen that

Question 16

Ernest Rutherford

Accepted Answer

central nucleus while electrons randomly orbit the nucleus, The protons and neutrons are condensed within a tiny

Question 17

Democritus

Accepted Answer

450 BCECoined the term "atom"

Question 18

Dimitri Mendeleev

Accepted Answer

1869Invented Periodic Table

Question 19

Polar Molecules

Accepted Answer

Partial positive end and a partial negative end, (bond dipoles do not cancel out), If a molecule is asymmetrical it is polar.

Questions 19