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Question 1

Each of these is an example of matter EXCEPT _____.
a cloud
a dust particle
air
a beam of light

Answer 1

A beam of light

Question 2

An atom of the element with atomic number 6 always has _______.
six electron clouds
six protons in its nucleus
an atomic mass of six
more than six neutrons

Answer 2

six protons in its nucleus

Question 3

The atomic number of an element tells the number of ________ in the nucleus of an atom of that element.
neutrons
protons
electrons
isotopes

Answer 3

protons

Question 4

Isotopes of an element contain different numbers of _______.
electrons
protons
neutrons
energy levels

Answer 4

neutrons

Question 5

Most elements found on the left side of the periodic table are ______.
metals
nonmetals
metalloids
brittle

Answer 5

metals

Question 6

________ are small particles that make up most types of matter on Earth.
compounds
elements
mixtures
atoms

Answer 6

atoms

Question 7

Which of the scientists below introduced the idea that matter is made up of tiny, individual bits called atoms?
Arrhenius
Avogadro
Democritus
Chadwick

Answer 7

Democritus

Question 8

Which of the following scientists envisioned the atom as a ball of positive charge with electrons embedded in it, much like chocolate chips spread through cookie dough?
Crookes
Dalton
Rutherford
Thomson

Answer 8

Thomson

Question 9

Which of the following are found close to the right side of the periodic table?
metals
lanthanides
nonmetals
metalloids

Answer 9

nonmetals

Question 10

How is matter defined?
the negative charge in an atom
anything that has mass and occupies space
the mass of the nucleus
sound, light, and energy

Answer 10

anything that has mass and occupies space

Question 11

What does the atom consist of ?
electrons, protons, alpha particles
neutrons and protons

electrons, protons, and neutrons
elements, protons, and electrons

Answer 11

electrons, protons, and neutrons

Question 12

The particle that is labeled #3 on the diagram and has a positive charge in an atom is called ______.
electron
proton
neutron
isotope

Answer 12

proton

Question 13

What particle is labeled #2 in the diagram?
-not negative or positive
electron
proton
neutron
isotope

Answer 13

neutron

Question 14

. What particle is labeled #1 in the diagram?negative
electron
proton
neutron
isotope

Answer 14

electron

Question 15

In an atom, where is an electron located?
\in the nucleus with the proton
\on the periodic table of the elements
\with the neutron
\in a cloud like formation surrounding the nucleus

Answer 15

in a cloudlike formation surrounding the nucleus