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chapter 2&3
matter & states of matter
Question | Answer |
---|---|
solid becomes a liquid | melting point |
liquid changes to a gas | boiling point |
liquid to a gas | evaporation |
solid to a gas without becoming liquid | sublimation |
liquid flowing | viscosity |
The 3 states of Matter | Solid, Liquid, Gas |
atoms in a solid move? | packed together |
atoms in a liquid move? | freely. |
atoms in a gas move? | very spread out. |
shape and volume of a solid? | Definite volume and definite shape |
shape and volume of a liquid. | no definite shape |
shape and volume of a gas. | Describe the shape and volume of a gas. No definite volume, no definite shape |
What happens when atoms are heated? | They move faster and begin to spread out. |
What happens when atoms are cooled? | move slower |
What is conduction? | Heat transfers through direct contact. |
What is convection? | Warm air rises and the cool air sinks. |
What is radiation? | Heat transfers through the air in waves. |
What happens to the amount of heat during the melting process? | Heat is added |
What happens to the amount of heat during the condensation process? | Heat is removed |
Anything that has mass and takes up space. | Matter |
What happens to the kinetic energy of an object when the speed of an object increases? | The energy will increase. |
What happens to pressure as the temperature increases? | The Pressure increases. |
two or more substances are combined | Mixture |
substance made out of only one kind of matter. | Pure substance |
Mass divided by volume. | Density |
does not have a definite shape or definite volume and the particles have been broken apart. | Plasma |
appearance of a material but does not make the material into another substance. | Physical change |
becomes a new substance | Chemical Change |