Science reasoning

ACT vocabulary · English · Unit 2

• concentration n.: Focused attention; the amount in a mixture
• density n.: the amount of something per unit of space
• dissolve v.: to mix into a liquid and become part of it
• emission n.: the release of gas, heat, light, or other energy
• fluctuation n.: a change up or down in an amount or level
• gradient n.: how steep a slope is; a gradual change
• magnitude n.: the size, extent, or importance of something
• precipitate v., n., adj.: to cause something to happen suddenly or sooner
• saturation n.: colour intensity; a state of being completely full
• solubility n.: how much of a substance can dissolve in a liquid
• trend n., v.: A general direction of change or a popular style
• catalyst n.: something that causes or speeds up a change