Question

unit 3 matter interactions > lesson 5 physical vs. chemical change mark as complete determine which characteristics of a chemical change each example shows. select the proper buttons to complete the chart. characteristics of a chemical change popping an inflated balloon dissolving sugar in water mixing vinegar and baking soda a physical change occurs. □ □ □ the chemical makeup of the substance changes. □ □ □ a new chemical substance is produced. □ □ □ a chemical change occurs. □ □ □

Explanation:

To solve this, we analyze each example based on physical and chemical change concepts:

1. Popping an Inflated Balloon

• A physical change occurs: ✔️ (Popping a balloon is a physical change—only shape/state of the balloon (or gas inside) changes, no new substance. Chemical makeup of the balloon/gas doesn’t change.)
• The chemical makeup of the substance changes: ❌ (No chemical reaction, so chemical makeup remains same.)
• A new chemical substance is produced: ❌ (No new substance formed.)
• A chemical change occurs: ❌ (Only physical change.)

2. Dissolving Sugar in Water

• A physical change occurs: ✔️ (Dissolving sugar is a physical change—sugar molecules disperse in water, but sugar and water retain their chemical identities. No new substance.)
• The chemical makeup of the substance changes: ❌ (Sugar (sucrose) and water (H₂O) remain chemically unchanged.)
• A new chemical substance is produced: ❌ (No chemical reaction; sugar can be recovered by evaporation.)
• A chemical change occurs: ❌ (Physical change, not chemical.)

3. Mixing Vinegar and Baking Soda

• A physical change occurs: ❌ (A chemical reaction occurs: Vinegar (acetic acid) + Baking Soda (sodium bicarbonate) → Carbon dioxide + Water + Sodium acetate. So it’s a chemical change, not physical.)
• The chemical makeup of the substance changes: ✔️ (Reactants (vinegar, baking soda) are converted into new products (CO₂, H₂O, sodium acetate), so chemical makeup changes.)
• A new chemical substance is produced: ✔️ (New substances (CO₂, H₂O, sodium acetate) are formed.)
• A chemical change occurs: ✔️ (Chemical reaction with new substances formed.)

Final Chart (Checkboxes):

Characteristics of a Chemical Change	Popping an Inflated Balloon	Dissolving Sugar in Water	Mixing Vinegar and Baking Soda
The chemical makeup of the substance changes.	❌	❌	☑️
A new chemical substance is produced.	❌	❌	☑️
A chemical change occurs.	❌	❌	☑️

(Note: For each row, check the box if the statement applies to the example.)

Answer:

To solve this, we analyze each example based on physical and chemical change concepts:

1. Popping an Inflated Balloon

• A physical change occurs: ✔️ (Popping a balloon is a physical change—only shape/state of the balloon (or gas inside) changes, no new substance. Chemical makeup of the balloon/gas doesn’t change.)
• The chemical makeup of the substance changes: ❌ (No chemical reaction, so chemical makeup remains same.)
• A new chemical substance is produced: ❌ (No new substance formed.)
• A chemical change occurs: ❌ (Only physical change.)

2. Dissolving Sugar in Water

• A physical change occurs: ✔️ (Dissolving sugar is a physical change—sugar molecules disperse in water, but sugar and water retain their chemical identities. No new substance.)
• The chemical makeup of the substance changes: ❌ (Sugar (sucrose) and water (H₂O) remain chemically unchanged.)
• A new chemical substance is produced: ❌ (No chemical reaction; sugar can be recovered by evaporation.)
• A chemical change occurs: ❌ (Physical change, not chemical.)

3. Mixing Vinegar and Baking Soda

• A physical change occurs: ❌ (A chemical reaction occurs: Vinegar (acetic acid) + Baking Soda (sodium bicarbonate) → Carbon dioxide + Water + Sodium acetate. So it’s a chemical change, not physical.)
• The chemical makeup of the substance changes: ✔️ (Reactants (vinegar, baking soda) are converted into new products (CO₂, H₂O, sodium acetate), so chemical makeup changes.)
• A new chemical substance is produced: ✔️ (New substances (CO₂, H₂O, sodium acetate) are formed.)
• A chemical change occurs: ✔️ (Chemical reaction with new substances formed.)

Final Chart (Checkboxes):

Characteristics of a Chemical Change	Popping an Inflated Balloon	Dissolving Sugar in Water	Mixing Vinegar and Baking Soda
The chemical makeup of the substance changes.	❌	❌	☑️
A new chemical substance is produced.	❌	❌	☑️
A chemical change occurs.	❌	❌	☑️

(Note: For each row, check the box if the statement applies to the example.)