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Vocabulary
Question | Answer |
---|---|
what does thermal energy mean | The kinetic energy of the moving particles in a substance an object. |
what does solid mean | something that is really hard. |
what does liquid mean | something that is wet. |
what does gas mean | something that you use for cars and something that you use to move things. |
what does plasma mean | A state of matter made up of charged atoms, uncharged atoms, and free electrons. |
what does colloid mean | A mixture that contains particles that are too small to see. |
what does phase change mean | when the moon goes around the earth and it has different types of moon phases. |
what does particles mean | A particle is a minute fragment or quantity of matter. In the physical sciences, a particle is a small localized object to which can be ascribed several physical or chemical properties such as volume or mass. |
what does metaling point mean | The temperature at which a substance changes from a solid to a liquid. |
what does freezing point mean | The temperature at which a liquid changes into a solid; the same temperature as the melting point. |
what does boiling point mean | Physics, Chemistry. the temperature at which the vapor pressure of a liquid is equal to the pressure of the atmosphere on the liquid, equal to 212°F (100°C) for water at sea level. |
what does evaporation mean | The process by which a liquid changes into a gas. |
what does Condensation mean | The process by which water vapor changes into liquid water. |
what does volume mean | The amount of space something takes up. |
what does mass mean | The amount of matter something has. |
what does density mean | The amount of mass something has in relation to its volume |
what does pure substance mean | A material that is composed of only one type of particle; examples of a pure substance include gold, oxygen and water. |
what does atom mean | the smallest unit of am element that still has the properties of that element |
what does Molecule mean | is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. |
what does element mean | a substance made up of only one kind of atom |
what does compound mean | a substance made up of atoms of two or more elements that are chemically combined. |
what does extended structure mean | Two things that are going together |
what does physical change mean | are changes affecting the form of a chemical substance, but not its chemical composition. |
what does chemical change mean | a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance. |
what does natural changes mean | they change naturally by there self not someone else change it |
what does Synthetic material mean | it is not natural it is made by a person and it is a material that we use |