7 Questions
What is the main difference between reversible changes and irreversible changes?
Reversible changes allow a substance to return to its original state, while irreversible changes do not.
Match the following terms with their definitions:
Melt = Reversible change where a solid turns into a liquid Evaporate = Reversible change where a liquid turns into a gas Condense = Reversible change where a gas turns into a liquid Solution = Homogeneous mixture of a solvent and a solute Solvent = The component of a solution present in the largest amount Solute = The component of a solution present in a smaller amount Uniform = Having the same properties throughout
What is the name of the first video mentioned related to rocks?
Types of Rocks
What type of rocks are discussed in the second video mentioned?
Igneous Rocks
What type of rock is formed through the cooling and solidification of magma or lava?
igneous
What is the name of the process by which rocks are broken down into smaller particles?
weathering
What is the name of the process by which various rock types are created and changed over time?
rock cycle
Study Notes
Changes to Substances
- A substance can undergo two types of changes: reversible and irreversible changes.
Reversible Changes
- A substance can return to its original state.
- The chemical properties of the substance do not change.
- Most physical changes are reversible changes.
- No new substances are formed.
Irreversible Changes
- A substance cannot return to its original state.
- The chemical properties of the substance change.
- All chemical changes are irreversible changes.
- New substances are formed.
Key Concepts
- Melt: a type of physical change.
- Evaporate: a type of physical change.
- Solution: a mixture of a solvent and a solute.
- Solvent: the substance that dissolves the solute.
- Solute: the substance that is dissolved in the solvent.
- Uniform: a mixture that has the same composition throughout.
- Condense: a type of physical change.
Rocks, the Rock Cycle, and Soil
- The umbrella topic of rocks encompasses the rock cycle and soil.
Types of Rocks
- Igneous rocks are a type of rock.
Rocks, the Rock Cycle, and Soil
- The umbrella topic of rocks encompasses the rock cycle and soil.
Types of Rocks
- Igneous rocks are a type of rock.
Learn about the two types of changes that substances can undergo, including reversible changes and irreversible changes, and their characteristics.
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