Physical Science Chapter 4: Atoms

Question 1

How many electrons can go in ring 1?

Accepted Answer

2

Question 2

In Rutherford's atomic model, describe location of each particle

Accepted Answer

a. protons,neutrons are in nucleus:electrons are outside

Question 3

What was the first atomic theory lacking causing some scientists to not believe it?

Accepted Answer

evidence from experiments

Question 4

What particle did JJ Thompson discover from his cathode ray tube experiment?

Accepted Answer

electrons

Question 5

When does an ion become “charged?”

Accepted Answer

when electron amounts are added or subtracted

Question 6

What determines the number of electron rings for an atom?

Accepted Answer

the total number of electrons

Question 7

What did John Dalton use to prove his atomic theory ideas?

Accepted Answer

b. evidence from his experiments

Question 8

What is the mass number of an element?

Accepted Answer

c. the total amount of protons and neutrons

Question 9

how many electrons can go in ring 3?

Accepted Answer

18

Question 10

Isotopes have the same number of protons but different number of which particle?

Accepted Answer

neutrons

Question 11

Which 1 particles moves around the nucleus? What is the charge of that particle?

Accepted Answer

electrons

Question 12

What was 1 way John Dalton and Democritus' atomic theory was similar?

Accepted Answer

both believed atoms could not be split into smaller parts

Question 13

Who developed the first atomic theory more than 2000 years ago?

Accepted Answer

Democritus

Question 14

JJ Thompson said atoms were not “indivisible”: What is a synonym for “indivisible?”

Accepted Answer

inseparable

Question 15

What are the 3 atomic particles distinguished by?

Accepted Answer

mass, charge, and location

Question 16

What 2 particles make up the nucleus?

Accepted Answer

protons and neutrons

Question 17

Which number is higher: the atomic number or mass number? Why?

Accepted Answer

mass number, protons and neutrons are combined

Question 18

What is the Greek meaning of “atomos?”

Accepted Answer

b. atomic particles cannot be divided or split

Question 19

What is the atomic number of an element?

Accepted Answer

number of protons

Question 20

Label the picture with: protons, neutrons, electrons

Accepted Answer

hi

Question 21

In Ernest Rutherford's gold foil experiment, what was his main discovery?

Accepted Answer

the nucleus was dense and had most of the atom’s mass

Question 22

Which particle defines or changes element name?

Accepted Answer

protons

Question 23

how many electrons can go in ring 2?

Accepted Answer

8

Question 24

With the initial atomic theory, atoms were described as...?

Accepted Answer

small and inseparable

Question 25

Is the nucleus positive, negative, or neutral? Why?

Accepted Answer

a. positive, protons are positive particles

Physical Science Chapter 4: Atoms

Questions 25

Physical Science Chapter 4: Atoms

Questions 25