Science reasoning

ACT vocabulary · English · Word dictation · 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

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