Question

determine which characteristics of a chemical change each example shows.
complete the chart.
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	popping an inflated balloon	dissolving sugar in water	mixing vinegar and baking soda
a new chemical substance is produced.	□	□	□
a chemical change occurs.	□	□	□
a physical change occurs.	□	□	□

Explanation:

To solve this, we analyze each example:

1. Popping an Inflated Balloon

• The chemical makeup of the substance changes? No (just a physical change in shape/volume of the balloon, gas inside remains the same).
• A new chemical substance is produced? No (no chemical reaction, just physical deformation).
• A chemical change occurs? No (no new substance, only physical change).
• A physical change occurs? Yes (balloon pops, gas expands—physical change in state/shape).

2. Dissolving Sugar in Water

• The chemical makeup of the substance changes? No (sugar dissolves, but sugar and water retain their chemical identities; it’s a physical mixture).
• A new chemical substance is produced? No (sugar + water → sugar solution, no new compound).
• A chemical change occurs? No (physical dissolution, reversible).
• A physical change occurs? Yes (dissolving is a physical change, as sugar can be recovered by evaporation).

3. Mixing Vinegar and Baking Soda

• The chemical makeup of the substance changes? Yes (vinegar (acetic acid) reacts with baking soda (sodium bicarbonate) to form new substances: CO₂, H₂O, sodium acetate).
• A new chemical substance is produced? Yes (CO₂, H₂O, sodium acetate are new).
• A chemical change occurs? Yes (reaction with new substance formation).
• A physical change occurs? No (this is a chemical reaction, not a physical change).

Filling the Chart (Checkboxes):

Characteristic	Popping an Inflated Balloon	Dissolving Sugar in Water	Mixing Vinegar and Baking Soda
A new chemical substance is produced.	☐	☐	☑
A chemical change occurs.	☐	☐	☑
A physical change occurs.	☑	☑	☐

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

Answer:

To solve this, we analyze each example:

1. Popping an Inflated Balloon

• The chemical makeup of the substance changes? No (just a physical change in shape/volume of the balloon, gas inside remains the same).
• A new chemical substance is produced? No (no chemical reaction, just physical deformation).
• A chemical change occurs? No (no new substance, only physical change).
• A physical change occurs? Yes (balloon pops, gas expands—physical change in state/shape).

2. Dissolving Sugar in Water

• The chemical makeup of the substance changes? No (sugar dissolves, but sugar and water retain their chemical identities; it’s a physical mixture).
• A new chemical substance is produced? No (sugar + water → sugar solution, no new compound).
• A chemical change occurs? No (physical dissolution, reversible).
• A physical change occurs? Yes (dissolving is a physical change, as sugar can be recovered by evaporation).

3. Mixing Vinegar and Baking Soda

• The chemical makeup of the substance changes? Yes (vinegar (acetic acid) reacts with baking soda (sodium bicarbonate) to form new substances: CO₂, H₂O, sodium acetate).
• A new chemical substance is produced? Yes (CO₂, H₂O, sodium acetate are new).
• A chemical change occurs? Yes (reaction with new substance formation).
• A physical change occurs? No (this is a chemical reaction, not a physical change).

Filling the Chart (Checkboxes):

Characteristic	Popping an Inflated Balloon	Dissolving Sugar in Water	Mixing Vinegar and Baking Soda
A new chemical substance is produced.	☐	☐	☑
A chemical change occurs.	☐	☐	☑
A physical change occurs.	☑	☑	☐

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