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Ch. 4 Atoms Test Review (PS)

Last updated over 2 years ago

30 questions

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What fundamental particles make up an atom?

Neutrons, Electrons, and Neutrinos

Protons, Neutrons, and Photons

Protons, Electrons, and Positrons

Protons, Neutrons, and Electrons

The number of protons in an atom determines what?

The atom's charge

The mass number

The atomic number

The number of neutrons

Where are the protons and neutrons located within an atom?

In the nucleus

In the atomic radius

In the neutral zone

In the electron shell

How does the number of protons relate to the number of electrons in a neutral atom?

There is no relation

They are equal

Protons are always more

Electrons are always more

What subatomic part of an atom carries a negative charge?

Nucleus

Electron

Proton

Neutron

Where is the majority of an atom's mass found?

Electron cloud

Atomic radius

Outer shells

Nucleus

Which atomic particle determines the identity of an atom?

Orbital

Neutron

Proton

Electron

What is the charge of a neutron?

Positive

Variable

Negative

Neutral

Who proposed the plum pudding model of atom?

J.J. Thomson

Niels Bohr

John Dalton

Ernest Rutherford

In Bohr's atomic model, where are the electrons located?

In a random cloud around the nucleus

Evenly distributed in the atom

In specific energy levels around the nucleus

In the nucleus

Who discovered the electron in the atomic structure?

Ernest Rutherford

John Dalton

J.J. Thomson

Niels Bohr

Who introduced the concept of the atom?

Ernest Rutherford

Niels Bohr

John Dalton

Dmitri Mendeleev

Which scientist's experiment concluded that atom's nucleus is small and positively charged?

Ernest Rutherford

John Dalton

J.J. Thomson

Niels Bohr

If magnesium (Mg) has an atomic number of 12, how many protons does it have?

24

18

12

22

How many electrons does chlorine (Cl) with an atomic number of 17 have given it is neutrally charged?

17

34

20

35

Oxygen (O) has an atomic number of 8 and a mass number of 16. How many neutrons does it have?

24

16

18

8

If sulfur (S) has a mass number of 32 and contains 16 protons, how many neutrons does it have?

32

16

18

48

How many protons are in a neutral atom of Oxygen (O)?

8

15

10

16

What is the number of electrons in a negatively charged Chlorine ion (Cl-) ?

19

18

20

17

How many neutrons are present in Carbon-14?

12

14

8

6

An ion of Sulfur with a negative 2 charge (S-2) has how many electrons?

16

22

18

20

How many neutrons does the isotope Carbon-14 have?

6 neutrons

7 neutrons

8 neutrons

14 neutrons

What is the number of neutrons in the Hydrogen-2 isotope?

2 neutrons

0 neutrons

3 neutrons

1 neutron

Determine the number of neutrons in the isotope Oxygen-18.

8 neutrons

10 neutrons

9 neutrons

18 neutrons

Why do different elements emit different colors in a flame test?

Due to different levels of combustion occuring in reactions

Due to different molecular weights of the compounds

Due to different amounts of energy released by electrons in different energy levels

Due to different elements reacting differently to heat

What is the term for the smallest unit of an element that maintains the properties of that element?

Electron

Atom

Molecule

Proton

What is a unique number for each element that equals the number of protons in an atom of that element?

Neutral Number

Atomic Number

Atomic Mass

Isotopic Number

Isotopes of an element have the same number of protons but different number of...

Protons

Orbitals

Electrons

Neutrons

What term is used to describe the total number of protons and neutrons in an atom?

Isotopic Mass

Mass Number

Atomic Number

Atomic Weight

Which subatomic particle contributes to an atom's mass, but not its charge?

Neutron

Quark

Electron

Proton