WorksheetsBill Nye - Chemical Reactions
Total questions: 51
Worksheet time: 1hrs 6mins
Everything is made of (a) .
When chemicals get together they (a) .
Chemicals can react to create new (a) .
The (a) you are watching, the (b) you're wearing and the (c) you eat are all composed of (d) .
Chemical reactions occur when metal (a) .
A chemical reaction is occurring when your (a) .
You are observing a chemical reaction when you witness a (a) .
Chemical reactions happen when the (a) , which are in everything, (b) together.
H₂O is the chemical formula for (a) .
Water is 2 parts (a) and (b) part oxygen.
(H) is the symbol for (a) .
(O) is the symbol for (a) .
(a) is what is in the air that we breath and it is how metal (b) .
Oxygen is the reason why our blood is (a) when it is (b) of our body.
What is the chemical symbol for iron?
How does steel wool react with the oxygen in the air when you run electrons through it?
Steel wool reacts with oxygen in the air by igniting causing heat and forming iron oxide when electrons are passed through it.
If you run electrons through steel wool in a container full of oxygen what will happen?
The steel wool will ignite due to oxidation and sparks and because oxygen is a flamable chemical..
In a chemical reaction (a) is produced because (b) in the atoms of a substance (c) with the electrons of different (d) creating a brand new (e) .
Read the scenario then finish the passage.
If you have both (a) and oxygen in a balloon mixed together, those chemicals can (b) to create water vapor by applying (c) . This is a chemical reaction because it involved the (d) of particles in (e) .
Which of the following is made of chemicals?
People
People
Food
Food
All products
All products
Plants
Plants
Write a paragraph which answers the following questions:
What steps were taken in the "penny" chemical reaction?
What did you observe during the demonstration?
What did you learn from the demonstration?
Car engines and motorcycle engines are controlled by (a) reactions. They combine (b) with oxygen in the air, in small controlled (c) .
What type of reaction is fire or combustion?
physical
chemical
(a) is a (b) reaction which occurs when chemicals mix with (c) in the (d) producing (e) .
What chemicals are stored in a fire extinguisher, which have properties which put out fires?
carbon dioxide
How can you make your own DIY fire extinguisher?
Which of the following 2 poisons can we not live without?
sodium and chloride
What would happen if you breathed in just a little chlorine gas?
you live
you die
what happens when you add sodium to water?
When you separate sodium and (a) they produce 2 highly (b) and corrosive chemicals. However when they are combined into (c) through a (d) reaction they are stable and create a chemical (e) which living things need to survive SALT.
What chemical reaction occurs when you mix sodium (Na) with water (H₂O)?
It produces dangerous sodium hydroxide and hydrogen gases.
When (a) and chlorine are (b) they are (c) but when they are chemically (d) they create a new substance called sodium chloride or --> (e) .
Our tears and sweat are composed of (a) of water and salt. Water and salt can be broken down into (b) . Water is composed of (c) and oxygen and salt is composed of atoms of sodium and (d) .
Which of the following contain both sodium chloride and water?
blood
tears
sweat
sea water
How can we tell if a chemical reaction has taken place?
temperature change
color change
gas production
formation of a new substance
According to the film what does a pyrotechnician do?
make fireworks
understand how different metals and chemicals react
design structures like buildings and bridges
Pyrotechnician is the name for people who manufacture and use fireworks or any type of pyrotechnics like in the movies when something is blown up or ignited. Being a pyro technician requires a complete understanding of how chemicals and certain metals will react to each-other.
When you see the brilliant colors and light of fireworks bursting in the night sky you are observing a chemical reaction. The metals create the twinkle effect and the salts create the color. When you combine these metals and salts it produces a combination of sparkle and color!
Different types of salts can combine with metals to create different colors. Not all chemicals like salts burn the same color.
If you mix salts called strontiums (Sr) it will produce a yellow color. When you take a copper (Cu) metal and burn it will give you blue colors. Aluminum (Al) gives you white. Barium (Ba) will give you bright white! Powdered aluminum (Al) with an oxidizer, will create the loud bang or pop that you hear when the firework is ignited.
Safety is always important! These chemicals are highly reactive and should not be played with or experimented with if you are not properly trained.
What is the role of a pyrotechnician?
Manufacturing and using fireworks
Studying the night sky
Creating safety protocols
Designing chemical experiments
What creates the twinkle effect in fireworks?
Metals
Salts
Oxidizers
Powdered aluminum
Which salt produces a yellow color when burned?
Strontium (Sr)
Copper (Cu)
Barium (Ba)
Aluminum (Al)
What color does copper (Cu) produce when burned?
Blue
Yellow
White
Bright white
What is the purpose of powdered aluminum with an oxidizer in fireworks?
To create a loud bang or pop
To produce bright white color
To generate blue color
To create a twinkle effect
Why is safety important when handling pyrotechnic chemicals?
They are highly reactive
They are expensive
They are difficult to store
They are hard to ignite
Which metal produces bright white color in fireworks?
Barium (Ba)
Copper (Cu)
Strontium (Sr)
Aluminum (Al)
What is the chemical formula for vinegar (acetic acid)?
H₂O
HCl
C₂H₄O₂
NaCl
What is the chemical formula for Baking Soda (sodium bicarbonate)?
H₂O
HCl
NaHCO₃
NaCl
What gas is produced when you mix sodium bicarbonate and acetic acid?
NaHCO₃ + C₂H₄O₂ --------> ?
H
Hydrogen
CO₂
Carbon Dioxide
Cl
Chlorine
N
Nitrogen
When you mix sodium bicarbonate and acetic acid to produce carbon dioxide, how do you know that a chemical reaction has taken place?
NaHCO₃ + C₂H₄O₂ --------> CO₂
gas is produced, indicated by the formation of bubbles.
The reaction produces heat
The mixture becomes solid
A color change occurs
A new substance is created
During a chemical (a) heat is (b) because the reaction creates (c) which is absorbed or (d) during the reaction.
Rewrite and complete the following sentences.
-How does baking a cake demonstrate a chemical reaction?
-How will you know if a chemical reaction has occurred (give at least 3 indicators).
A chemical reaction happens when chemicals combine to form new (a) .
When an athlete gets injured during a game they may use a cold pack. Inside the cold pack are 2 chemicals. When you break the plastic that separates them the chemicals mix. The chemical reaction takes up more energy than it gives off. This is because all chemical reactions absorb or release energy in an endothermic (Absorbs) or exothermic (releases) reaction. The cold pack is an example of an endothermic reaction so it absorbs energy and gets cold very fast.
What type of reaction occurs in a cold pack when the chemicals mix?
Endothermic
Exothermic
Neutral
Combustion
Why does a cold pack get cold very fast?
It absorbs energy during an endothermic reaction.
It releases energy during an exothermic reaction.
It uses electricity to cool down.
It contains ice that melts quickly.
Which of the following is true about all chemical reactions?
They absorb or release energy.
They always absorb energy.
They always release energy.
They do not involve energy changes.
How does breaking the plastic in a cold pack initiate the reaction?
It allows the chemicals to mix.
It releases stored energy.
It activates a cooling mechanism.
It freezes the chemicals.
What is the periodic table of the elements?
a chart that tells the history of all chemical discoveries
an arrangement that shows only metals and gases.
a list of all known minerals
an arrangement of all known chemical elements, and how they react
How many naturally occurring elements are in existence?
What chemical can be found in bananas?
What chemical can be found in milk?
Calcium
What are the chemical symbols for sodium, calcium and potassium?
What are the chemical symbols for helium and neon?
