Investigating Chemical Reactions in Water

Miss Patti leads lesson 4 on chemical reactions, focusing on the investigation of water in Westfield. Students are encouraged to gather materials and follow along with the investigation. The lesson recaps previous findings about rust formation from iron pipes and fertilizer, and explores whether other substances are produced. The investigation aims to determine if atoms from the fertilizer are forming new substances, raising questions about their presence in the water. The lesson concludes with a focus on further investigations into chemical reactions.

What materials are suggested for the investigation in the lesson?

• Salt, sugar, measuring spoon, glass jar

• Baking soda, vinegar, measuring cup, plastic wrap

• Lemon juice, baking powder, plastic bottle, foil

• Alka-seltzer tablets, water, scale, Ziploc bags

What was discovered about the brown substance in the water during the previous lesson?

• It was a natural occurrence in the area.

• It was caused by algae growth.

• It was due to pollution from a factory.

• It was a result of a chemical reaction.

What two elements were involved in the chemical reaction discussed in the lesson?

• Iron pipes and fertilizer

• Lead pipes and acid

• Plastic pipes and detergent

• Copper pipes and chlorine

Why is it important to determine if other substances were produced in the reaction?

• To ensure the water is safe to drink

• To improve the taste of the water

• To reduce the cost of water treatment

• To increase the water supply

What does the atomic scale model help students understand?

• The color of the water

• The temperature of the water

• The chemical reaction that formed rust

• The taste of the water

What is the main focus of the new investigation?

• To find out if other substances are produced

• To identify the source of the water

• To measure the water temperature

• To test the water's pH level

What happens to atoms during a chemical reaction?

• They rearrange

• They disappear

• They multiply

• They shrink

What is the potential danger if other substances are present in the water?

• They could be harmful to drink

• They could make the water taste bad

• They could change the water's color

• They could increase water pressure

What is the role of the students in the investigation?

• To design a new water system

• To observe and report findings

• To clean the water supply

• To distribute water to the town

What was the initial uncertainty about the brown substance?

• Its exact source

• Its color

• Its temperature

• Its taste