Duplicate of Advanced College Prep - Chapter 3: Atomic Structure

Question 1

What discovery and experiment/device below are incorrectly matched?

Accepted Answer

Oil Drop Experiment- proton

Question 2

Which statement below regarding the nucleus is incorrect?

Accepted Answer

It contains the majority of the atom's volume.

Question 3

Calculate the mass, in grams, of 3.24 x 1022 atoms of iron.

Accepted Answer

3.01

Question 4

Reactant #1 = 3g, Reactant #2 = 5g → Product #1 = 6g, so Product #2 = ?

Accepted Answer

2 grams

Question 5

Who first suggested the existence of the atom in 400 BC and believed it was indivisible?

Accepted Answer

Democritus

Question 6

Which scientist and discovery are incorrectly matched below?

Accepted Answer

Thomson- proton

Question 7

Name the smallest particle of an element that retains the chemical properties of that element.

Accepted Answer

atom

Question 8

Which two scientists believed the atom was indivisible?

Accepted Answer

Democritus and Dalton

Question 9

Which model of the atom and description are incorrectly matched?

Accepted Answer

Planetary Model- protons orbit the nucleus

Question 10

Find the number of moles in 92.5 grams of nickel.

Accepted Answer

1.58

Question 11

Which law says a chemical compound contains the same elements in exactly the same proportions?

Accepted Answer

Law of Definite Proportions

Question 12

How many neutrons are there in Carbon-14?

Accepted Answer

8

Question 13

What element has an atom with 26 neutrons and a mass number of 48?

Accepted Answer

Titanium

Question 14

Find the average atomic mass: Copper-63 = 69.09%; Copper-65 = 30.91%

Accepted Answer

63.62 amu

Question 15

Who established the first atomic theory that was supported by scientific proof?

Accepted Answer

Dalton

Question 16

Opposite charges ______, while like charges ______.

Accepted Answer

attract, repel

Question 17

Isotopes have the same number of _____, but a different number of ______.

Accepted Answer

protons; neutrons

Question 18

Which law states that elements always combine in small WHOLE NUMBER ratios?

Accepted Answer

Law of Multiple Proportions

Questions 18