Chapter 4 Atoms Physical Science Chem

Question 1

Electrons have what type of charge?

Accepted Answer

Negative

Question 2

Which two subatomic particles are found in the nucleus of an atom?

Accepted Answer

Protons & Neutrons

Question 3

When an electron gains energy, it can jump into a different energy level.

Accepted Answer

True

Question 4

The number of protons in one atom of an element is that element's...

Accepted Answer

Atomic Number

Question 5

What are the three subatomic particles of an atom?

Accepted Answer

Proton, neutron, electron

Question 6

How many protons does Lithium have?

Accepted Answer

3

Question 7

When electrons move from their excited state to the ground state, they release energy as...

Accepted Answer

Light

Question 8

Who has the plum pudding model saying negative charges are evenly spread in a positive atom?

Accepted Answer

JJ Thomson

Question 9

Scientist did a cathode ray experiment to discover electron.

Accepted Answer

JJ Thomson

Question 10

A higher energy level (excited state) is ______ stable than the ground state.

Accepted Answer

less

Question 11

Which two subatomic particles have the SAME MASS?

Accepted Answer

Protons & Neutrons

Question 12

Oxygen has 8 protons, 8 electrons and 9 neutrons. What is its mass number?

Accepted Answer

17

Question 13

Scientist said electrons move in orbits around the nucleus such as planets orbit the sun

Accepted Answer

Niels Bohr

Question 14

Neutrons have what type of charge?

Accepted Answer

No charge

Question 15

Protons have what type of charge?

Accepted Answer

Positive

Question 16

Whose atomic model fits the picture?

Accepted Answer

Ernest Rutherford

Question 17

In the chemical sodium nitrate, the sodium (metal) produces the color we see in the flame.

Accepted Answer

True

Question 18

Model describes the most likely location of electrons in an atom

Accepted Answer

Electron cloud model

Question 19

Nitrogen has an atomic number of 7 and an atomic mass of 14. How many neutrons does it have?

Accepted Answer

7

Question 20

Performed a gold foil experiment and discovered the nucleus

Accepted Answer

Ernest Rutherford

Question 21

Which scientist said that an atom is the smallest particle of matter?

Accepted Answer

John Dalton

Question 22

Which subatomic particle has a mass that is 2000 times smaller than the other two particles?

Accepted Answer

Electrons

Question 23

A region of space around the nucleus where an electron is likely to be found.

Accepted Answer

Orbital

Question 24

How do I calculate the mass number?

Accepted Answer

Sum of protons + neutrons

Question 25

If atoms have the same number of protons but different numbers of NEUTRONS, they are considered

Accepted Answer

Isotopes

Question 26

Democritus called a tiny piece of matter that could not be divided or destroyed a(n)...

Accepted Answer

Atom

Question 27

What did Rutherford NOT discover in his gold foil experiment?

Accepted Answer

Neutrons

Question 28

Whose atomic model fits the picture?

Accepted Answer

Niels Bohr

Question 29

What does the "12" stand for in Carbon-12?

Accepted Answer

Mass Number

Question 30

Boron has an atomic number of 5. Which of the following is false?

Accepted Answer

It has 5 neutrons

Question 31

Which of the following is true about John Dalton's atomic theory?

Accepted Answer

All of the above

Question 32

What is the atomic number of lithium?

Accepted Answer

3

Question 33

How many electrons does Sodium have?

Accepted Answer

11

Chapter 4 Atoms Physical Science Chem

Questions 33

Chapter 4 Atoms Physical Science Chem

Questions 33