Place a change in the column the Kirkland identifies it as a chemical change or physical change, dragon drop phrases into the correct columns
Chemical change or physical change
Neutralizing acid
Rusting iron
Baking cake
Breaking glass
Boiling water
Evaporating water
Chemical Change:
- Neutralizing acid
- Rusting iron
- Baking cake
Physical Change:
- Breaking glass
- Boiling water
- Evaporating water
To determine whether each of these changes is a chemical change or a physical change, we can go through them one by one:
1. Neutralizing acid: Chemical change
2. Rusting iron: Chemical change
3. Baking cake: Chemical change
4. Breaking glass: Physical change
5. Boiling water: Physical change
6. Evaporating water: Physical change
Here is the breakdown of each change:
Chemical changes:
- Neutralizing acid: When an acid is neutralized, a chemical reaction occurs, resulting in the formation of new substances with different chemical properties.
- Rusting iron: Rusting is an example of a chemical reaction. When iron comes into contact with oxygen and moisture, it undergoes oxidation, resulting in the formation of rust.
Physical changes:
- Breaking glass: Breaking glass does not involve any chemical reactions. It is a physical change where the glass is physically fragmented without any change in its chemical composition.
- Boiling water: Boiling water is a physical change that involves the conversion of liquid water into water vapor through the application of heat.
- Evaporating water: Similar to boiling, evaporating water is a physical change where liquid water changes into water vapor without any chemical reaction taking place.
Please note that although baking a cake involves chemical reactions that cause the ingredients to transform into a new substance, it can also be considered a physical change since the overall composition does not drastically change. However, for simplicity, it is generally categorized as a chemical change.