TCAP Review on Atoms - Day 1

Multiple Choice

Which group reports the correct mass of slaked lime solution according to the Law of Conservation of Mass?

• Group 1

• Group 2

• Group 3

• Group 4

Multiple Choice

What information about atom A can be learned from this information?

Multiple Select

Which 2 hydrogels would be the best to use with burn dressings?

• A

• B

• C

• D

• E

Multiple Choice

In which position is this element located on the periodic table?

• P

• Q

• R

• S

The Building Blocks of Matter:

Atoms

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Matter

• Anything that has mass and takes up

space (volume)
– Examples:

• A brick has mass and takes up space
• A desk has mass and takes up space
• A pencil has mass and takes up space
• Air has mass and takes up space

All of the above examples are considered matter because

they have mass and take up space. Can you think of anything

that would not be considered matter?

Multiple Choice

Matter is anything that has ________ and takes up ________.

• mass, a shelf

• mass, space

• space, mass

• space, a shelf

Atoms

• Smallest possible unit

into which matter can
be divided, while still
maintaining its
properties.

• Made up of:

– protons
– neutrons
– electrons

• The solar system is

commonly used as an
analogy to describe the
structure of an atom

For example, what is the

smallest possible unit

into which a long essay can be

divided and still have some meaning?

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Atoms are so small that…

•it would take a stack of about
50,000 aluminum atoms to equal
the thickness of a sheet of
aluminum foil from your kitchen.

•if you could enlarge a penny until
it was as wide as the US, each of
its atoms would be only about 3
cm in diameter – about the size
of a ping-pong ball

•a human hair is about 1 million
carbon atoms wide.

•a typical human cell contains
roughly 1 trillion atoms.

•a speck of dust might contain
3x1012 (3 trillion) atoms.

•it would take you around 500
years to count the number of
atoms in a grain of salt.

www.deckersfoods.com

C-C-C-C-C-… + 999,995 more

1 trillion atoms 🡪

. Is made of approximately 3 trillion atoms

Just one of these grains

Protons (+)

• Positively (☺

) charged

subatomic particles

• Found in the nucleus

(center of the atom)

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Multiple Choice

Protons are _________ charged.

• negatively

• neutral

• positively

• don't know

Neutrons

• Neutral particles;

have no electric
charge

• Help make up the

nucleus ( the
center) of the
atom with the
protons

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Multiple Choice

Neutrons have ______ charge.

• no

• positive

• negative

• weird

The Atom’s “Center”

• Protons and neutrons are grouped together to

form the “center” or nucleus of an atom.

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Notice that the electrons are not apart of the nucleus

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Multiple Choice

Which two parts are found in the nucleus of the atom?

• protons/ electrons

• electrons/ neutrons

• protons only

• protons/ neutrons

Electrons (-)

•Negatively (☹

)charged

particles

•Found outside the nucleus
(center) of the atom, in the
electron orbits/levels

•Move so rapidly around the
nucleus that they create an
electron cloud

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Multiple Choice

Electrons have a _________ charge.

• neutral

• negative

• positive

• no charge

Building Atoms

Draw a model of a helium atom. Make each of

the subatomic particles (protons, neutrons, and

electrons) a different color.

Atoms

Protons

Neutrons Electrons

Helium

2

2

2

​Draw on the next slide!

Draw

Draw an atom for Helium, which has the following atomic structure:

Protons: 2

Neutron: 2

Electrons: 2