Part 1 Questions
Terms
undefined, object
copy deck
- How is the specific gravity calculated for liquids?
- SG=Density of substance/Density of Water (Density of water = 1.00 at 3.98 C)
- What is the universe composed of
- Matter
- Describe 3 properties of matter
- 1) Has mass 2) Occupies Space 3) Has Intertia
- What is the transition of a liquid to a gas called? Give an example
- Vaporization. Ex. evaporation of water.
- What is the transition of a gas to a liquid called? Give an example.
- Condensation, Liquefaction. Ex. Formation of dew, liquefaction of carbon dioxide
- Give 4 examples of physical changes
- 1) change of state 2) movement 3) breaking 4) dissolving - the molecules remain the same.
- Describe the difference between Mass and Weight
- Mass is the amount of matter. Weight is the force pulling an object down d/t gravity. W=GH.
- What is the transition of a solid to a gas called? Give an example
- sublimation. Ex. sublimation of dry ice
- Describe the properties of a gas
- Particles are independent, far apart. Shape and volume are like container. Flows. Low density. Compressible. Expands greatly on heating.
- Give examples of physical properties
- color, taste, odor, solubility, luster, melting point, crystal structure, boiling point, hardness, elasticity, malleability, ductility, tensile strength, refractivity, coductivity, specific heat, density
- What is the transition of a liquid to a solid called? Give an example.
- freezing. Ex. Freezing of water (or a liquid metal)
- How can chemical properties be observed?
- Chemical properties are observed when a substance undergoes a change in composition
- Describe a chemical change
- New molecules produced.
- Give examples of chemical properties
- 1) reactivity w/ another substance (air, acid, etc). 2) Flamibility
- What is the transition from solid to liquid called? Give an example.
- melting/fusion. Ex. melting of snow/ice
- How is specific gravity calculated for gases?
- SG=Density of substance/Density of air
- What is the transition of a gas to a solid called? Give an example.
- Condensation, deposition. Ex. Formation of frost and snow.
- List the three states of matter
- Solid, Liquid, Gas
- Describe the properties of a solid
- Close, tightly packed particles. Definite shape and volume. Does not flow. High or low density. Not compressible. Expands slightly on heating.
- What is the formula for density
- D=Mass/Volume
- Describe the properties of a liquid
- Particles are mobile, but relatively close. Shape is like container. Definite volume. Flows. High or Low density. Not compressible. Expands slightly on heating.
- Can all substances change state by changing temperature
- No. Some substances (like wood) undergo chemical rxns first.