Questions (50) Hide answers

True

False

Protons and neutrons

Protons and electrons

Neutrons and electrons

Neutrons and electrons

Chapter 9: Understanding the Atom

Play Challenge

A public quiz

Review for the Chapter 9 test.

SHOW MORE

Copy and share this playable linkhttps://create.kahoot.it/share/chapter-9-understanding-the-atom/78280c64-4eea-4494-9293-f629ce8556cf

Q1: Most of the mass in an atom is found in the nucleus.

20 sec

Q2: Which subatomic particles have approximately the same mass?

20 sec

Pro tip: join up and save time together! Learn more

protons

neutrons

electrons

alpha particles

proteins

atoms

lipids

uranium

protons and electrons

electrons and quarks

electrons and neutrons

protons and neutrons

Q3: Of the 3 subatomic particles, the _____ has the least mass/

20 sec

Q4: All matter is made up of particles called

20 sec

Q5: The nucleus of an atom contains

20 sec

Pro tip: join up and save time together! Learn more

quarks.

beta particles.

proteins.

alpha particles.

25 amu.

30 amu.

50 amu.

55 amu.

more energy than

less energy than

an equal amount of energy compared to

Q6: Protons and neutrons are made of even smaller particles called

20 sec

Q7: An atom has 25 protons, 30 neutrons, and 25 electrons. The atomhas a mass of

20 sec

Q8: Electrons in energy levels closest to the nucleus have ___ e locatedin outer energy levels.

-

20 sec

Q9: Changing the number of ____ in an atom will change the type ofelement.

20 sec

Pro tip: join up and save time together! Learn more

protons

neutrons

electrons

nuclei

an electron cloud.

�xed energy levels.

a positively charged sphere.

the nucleus of the atom.

Democritus

Aristotle

Dalton

Bohr

Q10: According to current atomic theory, electrons are found in

20 sec

Q11: Who believed all matter was made up of earth, �re, water, and air?

20 sec

Q12: Who used the word “Atomos” to describe the small, solid objectsthat cannot be divided?

20 sec

Pro tip: join up and save time together! Learn more

Democritus

Aristotle

Rutherford

Thomson

Bohr

Chadwick

Dalton

Democritus

Dalton

Aristotle

Thomson

Rutherford

Q13: Who said that atoms of the same element are identical and atomscombine in speci�c ratios?

20 sec

Q14: Who discovered the nucleus using the gold foil experiment?

20 sec

Q15: What did Rutherford discover when conducting his gold foilexperiment?

20 sec

Pro tip: join up and save time together! Learn more

the nucleus

electrons

the electron cloud

Nothing!

Dalton

Thomson

Rutherford

Bohr

Chadwick

Demorcitus

Aristotle

Dalton

Q16: Who proposed the “plum pudding” model of the atom?

20 sec

Q17: Who discovered the neutron?

20 sec

Q18: Who discovered the electron with the cathode ray tubeexperiment?

20 sec

Pro tip: join up and save time together! Learn more

Rutherford

Aristotle

Thomson

Dalton

Bohr

Chadwick

Dalton

Democritus

Democritus

Aristotle

Rutherford

Chadwick

Q19: Who proposed a model of the atom with electrons moving isspeci�c layers?

20 sec

Q20: This model of the atom was created by

20 sec

Q21: This model of the atom was created by

20 sec

Pro tip: join up and save time together! Learn more

Dalton

Thomson

Chadwick

Aristotle

Dalton

Rutherford

Aristotle

Bohr

True

False

protons

neutrons

Q22: This model of the atom was created by

20 sec

Q23: Most of the atom is empty space

20 sec

Q24: Which subatomic particle is used to determine the identity of anatom?

20 sec

Pro tip: join up and save time together! Learn more

electrons

quarks

protons and neutrons.

protons and electrons.

neutrons and electrons

quarks and positrons

protons.

neutrons.

electrons.

alpha particles.

ions.

isotopes.

Q25: A neutral atom has the same number of

20 sec

Q26: Atoms of different elements always have a different number of

20 sec

Q27: Two atoms containing the same number of protons, but differentnumber of neutrons are called

20 sec

Pro tip: join up and save time together! Learn more

alpha particles.

quarks.

atomic numbers.

atomic masses.

element names.

numbers of electrons.

atomic number.

atomic mass.

number of electrons.

electric charge.

isotope.

ion.

Q28: 2 atoms containing the same number of protons, but differentnumber of neutrons have different

20 sec

Q29: Two atoms containing the same number of protons, but differentnumber of neutrons have the same

20 sec

Q30: If an atom has an uneven amount of protons and electrons, it iscalled a(n)

20 sec

Pro tip: join up and save time together! Learn more

polymer.

neutron.

cation.

anion.

positron.

negatron.

cation.

anion.

positron.

negatron.

1 proton and 1 neutron.

2 protons and 2 neutrons.

Q31: An atom containing more protons than electrons is a(n)

20 sec

Q32: An atom containing more electrons than protons is a(n)

20 sec

Q33: An alpha particle consists of

20 sec

Pro tip: join up and save time together! Learn more

1 electron.

2 electrons and 2 protons.

1 proton and 1 neutron.

2 protons and 2 neutrons.

1 electron.

2 electrons and 2 protons.

alpha

beta

gamma

omega

alpha

beta

Q34: An beta particle consists of

20 sec

Q35: A helium nucleus is ejected from the nucleus of the atom in ____decay.

20 sec

Q36: A high speed electron is ejected from the nucleus of the atom in____ decay.

20 sec

Pro tip: join up and save time together! Learn more

gamma

omega

alpha

beta

gamma

omega

Alpha

Beta

Gamma

Omega

bad, good

brother, nephew

Q37: The nucleus emits a high energy electromagnetic wave in ____decay.

20 sec

Q38: ____ decay happens when a neutron turns into a proton and anelectron leaves the nucleus

20 sec

Q39: In nuclear decay, atoms of a ____ element decay into atom of a ____element.

20 sec

Pro tip: join up and save time together! Learn more

father, son

parent, daughter

alpha

beta

gamma

omega

alpha

beta

gamma

omega

quark.

radioisotope.

Q40: In ___ decay, the atomic number increases by 1.

20 sec

Q41: In ___ decay, the atomic number decreases by 2.

20 sec

Q42: The amount of time it takes 1/2 of a radioactive substance to decayis called a(n)

20 sec

Pro tip: join up and save time together! Learn more

decay.

half-life.

Alpha

Beta

Gamma

Omega

Aristotle, Rutherford, Bohr

Aristotle, Einstein, Rutherford

Rutherford, Newton, Bohr

Newton, Bohr, Einstein

alpha

beta

Q43: ___ decay, does not change the element into another element

20 sec

Q44: Atomic Theory Contributions by date: Democritus, ____, Dalton,Thomson, ____, Chadwick, ____.

20 sec

Q45: Uranium-238 (atomic number 92) decays into thorium-234 (atomicnumber 90) in ____ decay.

20 sec

Pro tip: join up and save time together! Learn more

gamma

omega

alpha

beta

gamma

omega

Dalton

Thomson

Chadwick

Aristotle

positive

neutral

Q46: Lead-214 (atomic number 82) decays into bismuth-214 (atomicnumber 83) in ____ decay.

20 sec

Q47: This model of the atom was created by

20 sec

Q48: An atom has 11 protons, 12 neutrons, and 13 electrons. The atomhas a ____ (net) charge.

20 sec

Pro tip: join up and save time together! Learn more

negative

unknown

positive

neutral

negative

unknown

positive

neutral

negative

unknown

Q49: An atom has 55 protons, 78 neutrons, and 55 electrons. The atomhas a ____ (net) charge.

20 sec

Q50: An atom has 60 protons, 84 neutrons, and 59 electrons. The atomhas a ____ (net) charge.

20 sec

Pro tip: join up and save time together! Learn more