Interactive Video Script Template
Course
Science 7
Lesson
Objective
Semester
A
Unit
4
Lesson
3
Students will define the terms element, compound and mixture.
CLIP A (Introduction)
Visual
<image>
Audio
Matter is spread all throughout the
universe. It consists of anything that takes
up space and has mass.
http://commons.wikimedia.org/wiki/File:Rh
o_Ophiuchi.jpg
<image>
In our solar system 99.8% of the matter is
located in the sun. It is primarily made out
of the element hydrogen as plasma.
http://pixabay.com/en/sunset-sealandscape-317042/
<image>
http://pixabay.com/en/iceberg-antarcticapolar-blue-ice-404966/
<image>
Matter exists on Earth in primarily 3 states.
In a solid, the molecules are fixed in
place. Liquid molecules can move about.
Gases are the third state of matter.
Gas molecules move even faster. As
atoms or molecules get heated or cooled
they may switch between these states.
http://pixabay.com/en/old-faithful-geyserfamous-landmark-403224/
<image>
This is sulfur. It is an element because all
of its atoms are the same. Each has 16
protons.
http://commons.wikimedia.org/wiki/File:Sul
fur-sample.jpg
<image>
http://pixabay.com/en/lump-sugar-sugarcubes-white-sweet-549096/
Sugar, on the other hand is a compound.
All of its molecules have the same ratio
of carbon, hydrogen and oxygen.
Mixtures occur when more than one
element of a compound is mixed but no
chemical bonds are formed.
<image>
http://commons.wikimedia.org/wiki/File:Pla
nters-Trail-Mix.jpg
In some mixtures, it’s easy to see the
different parts. Trail mix is a good example
of this type. In others, like this juice, it’s
not.
<image>
http://pixabay.com/en/beverage-diet-drinkfemale-fresh-15706/
Question A
Stem: In this type of matter all of the atoms are identical.
Answer Choices:
A. Element
B. Compound
C. Mixture
D. Plasma
Correct Response (A)
(Video progresses to clip B)
Incorrect Response (other responses)
(Video progresses to clip E)
CLIP B (DOK1)
Visual
Audio
<image>
Elements are substances that are
composed entirely of the same type of
atoms, defined by the number of protons.
http://pixabay.com/en/silver-metalmetallic-grey-gray-576793/
<superimpose “Ag (silver) atoms all have
47 protons” over the image>
This bar of silver has the same number of
protons in each atom. They each contain
47.
<image>
This open sign is a tube filled with neon
gas. The element neon glows red when an
electric current passes through it.
http://commons.wikimedia.org/wiki/File:Is_
Open.jpg
<superimpose “10 protons per atom” over
the red part of the neon sign>
The atoms inside the tube are all the same
type. They each contain 10 protons.
Question B
Stem: What defines what element an atom is?
Answer Choices:
A. number of protons
B. number of electrons
C. number of neutrons
D. mass of the atom
Correct Response (A)
(Video progresses to clip C)
Incorrect Response (other responses)
(Video progresses to clip F)
CLIP C (Increased DOK2)
Visual
<image>
Audio
The space shuttle runs on liquid hydrogen
fuel. This fuel is ignited and combined
with an oxidizer which injects pure oxygen.
https://commons.wikimedia.org/wiki/File:0
20408_STS110_Atlantis_launch.jpg
<superimpose formula “H2 + O2 H2O +
heat” over the flames>
As the fuel burns the hydrogen and
oxygen form bonds and the atoms of
hydrogen and oxygen form a molecule.
<image>
Each molecule formed from this burning is
water. It is a compound because each
molecule has the same ratio of atoms.
http://pixabay.com/en/drop-of-watercondensation-fractal-566885/
<superimpose “H2O=2 hydrogen atoms
and 1 oxygen atom” over the image>
Every molecule in a compound has the
same ratio of atoms. Water has a 2:1
hydrogen to oxygen ratio.
Question C
Stem: Which type of substance is made of molecules with the same ratio of atoms?
Answer Choices:
A. Element
B. Compound
C. Homogeneous mixture
D. Heterogeneous mixture
Correct Response (B)
(Video progresses to clip D)
Incorrect Response (other responses)
(Video progresses to clip G)
CLIP D (Increased DOK3)
Visual
<image>
http://pixabay.com/en/asphalt-crackbackground-line-road-315756/
<point arrows to a few of the different
sized substances in the road>
Audio
Mixtures are all around us. They exist
whenever more than one substance is
combined without forming new molecules.
This road is a heterogeneous mixture. It is
not evenly mixed. There are particles of all
different sizes.
<image>
http://pixabay.com/en/drink-soda-glassthirst-beverage-341489/
<image>
http://pixabay.com/en/liquid-red-glassdrink-juice-pour-166772/
Soda is an example of a mixture. It is
composed of sugar, water, carbon dioxide
and other flavorings mixed together.
Juice is also a mixture. These drinks are
so evenly mixed that it is hard to tell the
different parts. It’s a homogeneous
mixture.
Question D
Stem: What kind of mixture is not evenly mixed?
Answer Choices:
A. Homogeneous mixture
B. Heterogeneous mixture
C. Solution
D. Alloy
Correct Response (B)
(Video progresses to Success Alert)
Incorrect Response (other responses)
(Video progresses to clip H)
CLIP E (Remedial 1)
Visual
Audio
<image>
Matter is anything that takes up space and
has mass. Salt is a compound because
all of its molecules are the same.
http://pixabay.com/en/salt-nature-eat-foodspice-91539/
<superimpose “1 Na and 1 Cl per
molecule” over the image>
Each salt molecule has one sodium and
one chlorine atom. Salt has very different
properties from its parent elements.
<images side by side>
By themselves both sodium and chlorine
are highly reactive. When they are in a
compound, though, their properties
change.
http://commons.wikimedia.org/wiki/File:So
dium.jpg
http://commons.wikimedia.org/wiki/File:Chl
orine-sample.jpg
<image>
Mixtures are made when matter is mixed
together but the molecules are not
combined into new types of molecules.
http://pixabay.com/en/blender-mixerjuicer-food-processor-10934/
Question E
Stem: What type of matter is composed of different substances that have not formed
chemical bonds?
Answer Choices:
A. Elements
B. Compounds
C. Mixtures
D. Liquids
Correct Response (C)
(Video progresses to clip B)
Incorrect Response (other responses)
(Video progresses to clip F)
CLIP F (Remedial 2)
Visual
Audio
<image>
http://pixabay.com/en/balloons-colorfulhappy-party-466169/
These balloons are filled with the gas form
of the element helium. That means that all
of the atoms in the balloon will be
identical.
<superimpose “2 protons per He atom”
over the balloons>
The elemental identity of an atom is
determined by the number of protons in
the nucleus, these have 2 each.
<image>
Pencil lead is composed of carbon atoms.
They are no longer made from actual lead.
The atoms are loosely compacted and
good for marking.
http://pixabay.com/en/school-pen-greatpointed-leave-93200/
<image>
In graphite, each atom contains 6 protons.
The atoms of a diamond also have 6 each.
They’re both made of carbon, but they are
http://pixabay.com/en/diamond-gem-cubic- not quite the same!
zirconia-jewel-123338/
Question F
Stem: Which type of substance contains atoms that contain the same number of
protons?
Answer Choices:
A. Homogeneous mixture
B. Heterogeneous mixture
C. Element
D. Compound
Correct Response (C)
(Video progresses to clip C)
Incorrect Response (other responses)
(Video progresses to Intervention Alert,
bringing students back to clip B)
CLIP G (Remedial 3)
Visual
<image>
Audio
The rust on these chains is made of a
combination of iron and oxygen.
http://pixabay.com/en/chain-rust-pastbondage-history-232930/
<image>
It is a compound that forms when pure
iron is combined with oxygen. Iron oxide
is made of the elements iron and oxygen.
http://pixabay.com/en/iron-chains-chainschain-link-steel-502883/
<superimpose “iron + water +oxygen 
Chemical reactions must occur in order for
rust + water” over the image of the
chains>
new compounds to form. In this case the
element oxygen is added to iron.
<image>
New compounds are continuously forming
through reactions that are rearranging the
ratio of atoms in molecules.
http://www.morguefile.com/archive/display
/151843
Question G
Stem: What happens when the ratios of atoms in a molecule changes?
Answer Choices:
a. New compounds form
b. New elements form
c. Oxygen is destroyed
d. Iron is destroyed
Correct Response (A)
(Video progresses to clip D)
Incorrect Response (other responses)
(Video progresses to clip F)
CLIP H (Remedial 4)
Visual
Audio
<image>
The water in the ocean is an example of a
mixture. It is hard to tell what the different
parts are because it is so evenly mixed.
http://commons.wikimedia.org/wiki/File:Ale
utian_islands_ocean_water.jpg
<superimpose salt + water = salt water
mixture>
The salt and water in the ocean can be
separated by evaporating off the water in
a sample.
<image>
If you were to go from the ocean to the
beach you would notice that the sand is
also a heterogeneous mixture.
http://pixabay.com/en/rocks-beach-windsand-ocean-555736/
<point arrows to the rocks on the beach>
This is because there are many different
types of materials in the sand, which is
mixed unevenly.
Question H
Stem: Which type of mixture is mixed so evenly that the individual parts cannot be seen?
Answer Choices:
A. Heterogeneous
B. Homogeneous
C. Element
D. Compound
Correct Response (B)
(Video progresses to Success Alert)
Incorrect Response (other responses)
(Video progresses to clip G)