| A | B |
|---|
| Substances are either elements or compounds. | True |
| The bioling point of a substance is a physical property | True |
| Fog is a compound | False- Colloid |
| Distillation is a way to separate a mixture using the physical property of boiling point | True |
| The law of conservation of mass states that the mass of all substances before a physical change equals the mass of all the substances after the change | False- Chemical |
| Colloids are solutions | False- Heterogeneous Mixtures |
| The Freezing Point of water is a physical Change | True |
| Heterogeneous mixtures include colloids, solutions, and suspensions | colloids, suspensions |
| If a mixture scatters light and does not settle upon standing, it is a suspension | False- Colloid |
| The Shape of an Organge is a ________. | physical property |
| Vinegar is an example of a ________. | solution |
| When a log burns in a fire, _______. | new substances are formed |
| When two or more substances are combined so each substance can be separated by physical means, the result is a_________. | mixture |
| A __________ is NOT a mixture | compound |
| The scattering of light by colloids is called________. | The Tyndall Effect |
| _______ is NOT a homogeneous mixture | Permanent-Press Fabric |
| composition variable | mixture |
| has mass, takes up space | matter |
| two or more elements combined | compound |
| all atoms the same | element |
| composition definite | substance |
| Matter is classified as _________ and mixtures | substances |
| A colloid is a ___________ mixture | heterogeneous mixture |
| River deltas, which form a silt and mud settle, are evidence that river water is a ________. | suspension |
| A particle scatters light if it is larger than the _________ of light. | wave length |
| When acid rain falls on limestome, __________ weathering occurs | chemical |
| The resistance of diamond (a form of carbon) to corrosion is a ___________ property | chemical |
| When sugar and salt are mixed together, the properties of the final substances are _______ those of the beginning substances. | the same as |
| THe law that states mass is neither gained nor lost in a chemical change is _____________. | the law of conservation of mass |
| Explain how you could separate a mixture of sand and sawdust | Put them in water and the sand will sink and the sawdust will float. |
| Why is saltwater a mixture, not a substance? | Because the salt can be physically separated from the water |
| What physical property could you use to separate a solution of two liquids? | Boiling point, physical property, distillation |
| Name three physical properties of a liquid | Boiling poing, Freezing point, color |
| A burning candle is placed in a sealed container on a sensitive balance. After a while, the flame becomes smaller and then goes out. Explain how the mass of the sustem changed. | It stays the same |
| A glass is filled with lemonade. Are the contents of the glass a substance or a mixture? | A mixture b/c you can separate the lemon juice from the water. |
| Iron and oxygen combine to form rust. Compare the mass of iron and oxygen before the reaction with the mass of the rust after the reaction. | They are the same b/c the law of conservation of mass |
| The main engines of the space shuttle burn oxygen and hydrogen and have an exhaust that is high temperature water vapor. Classify each of these as a substance or a mixture. | The oxygen and hydrogen are elements. The water vapor is a compound |
| Fresh pickle juice has a light green color. Is it a colloid, a solution, or a suspension? | It is a solution |
| List two physical properties of metallic aluminum | Shiny, bendable, metallic |
