3.3 - Chemical Reactions

Open Ended

What materials (reactants) are needed to burn propane? (Restate the question then type the answer)

Multiple Choice

What new substances (products) are made after propane burns?

• Oxygen (O2) and nitrogen (N2)
• Methane (CH4) and sulfur dioxide (SO2)
• Hydrogen (H2) and ammonia (NH3)
• Carbon dioxide (CO2) and water (H2O)

Open Ended

How is the heat and light energy from combustion reaction useful in everyday life? (Restate the question then type the answer)

Multiple Choice

What did Jessie add to the container in the lab?

• Oxygen gas

• Chlorine gas

• Hydrogen gas

• Nitrogen gas

Multiple Choice

What color was the substance that formed in the container?

• Blue

• Red

• Yellow

• Green

Multiple Choice

What did Jessie identify the solid substance as?

• Carbon

• Sulfur

• Phosphorus

• Iron

Multiple Choice

What was Jessie's claim about the chemical reaction?

• The chlorine turned into oxygen

• The chlorine turned into sulfur

• The chlorine turned into nitrogen

• The chlorine turned into hydrogen

Multiple Choice

Who did Jessie assist in the lab?

• Dr. Smith

• Dr. Yung

• Dr. Brown

• Dr. Lee

Poll

Do you think that Jessie's claim is correct?

• YES

• NO

Poll

Jessie's Claim: A chemical reaction changed the chlorine into sulfur.

Do you think that Jessie's claim is correct?

• YES

• NO

Open Ended

Jessie's Claim: A chemical reaction changed the chlorine into sulfur.

Explain why you think Jessie’s claim is either correct or incorrect.

Open Ended

What happens to atoms during a chemical reaction?

Multiple Choice

What is the missing reactant in the chemical reaction with chlorine (Cl₂) to produce sulfur (S) and hydrogen chloride (HCl)?

• Iron sulfide (FeS)

• Hydrogen (H₂)

• Sodium sulfide (Na₂S)

• Hydrogen sulfide (H₂S)

Multiple Choice

Which substance is described as a colorless gas with an odor similar to rotten eggs?

• Iron sulfide (FeS)

• Hydrogen (H₂)

• Sodium sulfide (Na₂S)

• Hydrogen sulfide (H₂S)

Multiple Choice

What are the products formed when hydrogen sulfide reacts with chlorine?

• Sulfur and water

• Sulfur and hydrogen chloride

• Sodium chloride and water

• Iron chloride and sulfur

Multiple Choice

Which of the following substances is a black solid and odorless?

• Iron sulfide (FeS)

• Hydrogen (H₂)

• Sodium sulfide (Na₂S)

• Sulfur dioxide (SO₂)

Multiple Choice

What is the property of sulfur dioxide as mentioned in the document?

• Yellow solid, smells like rotten eggs

• Colorless gas, smells like a burnt match

• Colorless liquid, odorless

• Black solid, odorless

Open Ended

Determine the other reactant inside the container.

Open Ended

Investigation Question:

What happens to atoms during a chemical reaction? Use the words model, substance, atoms, property, product, chemical reaction, rearrange, reactant.

Multiple Choice

What is the role of naturally occurring greenhouse gases in the atmosphere?

• They trap all the heat from the sun.

• They trap some heat from the sun to maintain a livable climate.

• They reflect all sunlight back into space.

• They have no effect on the climate.

Multiple Choice

What happens when there is too much CO2 in the air?

• It causes less heat to be trapped.

• It causes additional warming by trapping more heat.

• It has no effect on the temperature.

• It cools the Earth's surface.

Multiple Choice

What is one source of excessive CO2 in the atmosphere?

• Photosynthesis

• Burning fossil fuels

• Ocean waves

• Wind energy

Multiple Choice

Which gas is primarily responsible for trapping heat in the atmosphere?

• Oxygen

• Nitrogen

• Carbon dioxide (CO2)

• Helium

Multiple Choice

What is the main consequence of burning fossil fuels according to the diagram?

• It reduces greenhouse gases.

• It emits greenhouse gases that trap more heat.

• It has no impact on the environment.

• It cools the atmosphere.