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Matter Study Guide
Vocabulary terms and definitions for matter.
Term | Definition |
---|---|
Chemical property | how one thing reacts with another. |
Physical property | characteristic of matter which can be observed without changing the matter's identity. |
Matter | has atoms, takes up space, not an energy or force, has mass. |
Weight | measured with a scale |
Mass | measured with a balance |
Formula for weight | Mass*9.8 |
Formula for density | Mass/Volume |
Volume | Amount of space an object takes up, irregular objects measured using the displacement method. |
Displacement method | Liquid volume is measured in ml, whereas the volume of solid objects is measured in cm cubed. |
Buoyancy | Object sinks with greater density than liquid, floats with less density than liquid. |
Density | How tightly packed matter is, measured in g/cm cubed or g/ml. |
Formula for mass | Volume * density |
Malleability | How well something can be flattened/stretched without breaking (metal, gold, copper). |
Ductile | Ability to be stretched into a wire. |
Solute | Chemical being dissolved, material you add to another. |
Solvent | Chemical that dissolves things, material in which you add something. |
Physical change | Appearance of substance changes, but it's chemically the same, individual molecules don't change. |
Chemical change | Atoms making up matter rearrange to form new substances with new properties. |
Element | Pure substance that can't be separated into any others, properties identify each (atoms in it). |
Hydrogen | The most common element out of them all. |
Compound | Two or more different elements that chemically combine, always has the same components in the same proportion, have different properties than the elements making it up (sodium chloride). |
Mass | Measured in grams/kilograms |
Weight | Changes with location. |
Mass | Doesn't chance in location. |
Molecule | Two or more atoms that are joined together. |
Crystal | Rigid lattice-like framework of many atoms bonded together, made of ions (table salt). |
Homogeneous mixture | Mixture that has the same composition throughout (salt water). |
Heterogeneous mixture | Mixture that varies in composition (trail mix), has big particles that will settle out. |
Mass | Amount of matter in objects. |
Weight | Amount of gravitational pull on objects. |
Solubility | How well one material dissolves in another material. |
Magnetism | How well something sticks to a magnet. |
Thermal conductivity | How well heat travels through a substance. |
Electrical conductivity | How well electricity travels through a substance. |
Melting point | The point at which a solid becomes a liquid. |
Boiling point | The point at which a liquid becomes a gas. |
Atom | Smallest particle of an element. |
Crystal | Made of ions. |
Weight | Measured in newtons. |