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Question | Answer |
What states that the mass of all substances before a chemical change equals the mass of all substances after the change? | The Law of Conservation of Mass |
How can homogeneous mixtures be separated? | physical changes |
What are soil, a salad, and sugar water examples? | mixtures |
What are the final properties when sugar and sand are mixed together? | same as the beginning substances |
What is anything that has mass and takes up space? | matter |
How is matter classified? | substances or mixtures |
What is a pond an example of? | Suspension |
What type of change is burning paper? | chemical |
What are the particles that make up all matter? | atoms |
What type of change is baking cookies? | chemical |
What type of change is filtering? | physical |
How can dissolved substances be separated? | distillation |
What type of property is odor? | physical |
What type of property is resistance of a diamond to corrosion? | chemical |
What are H2O, CO2, and C12H22O11 example of? | chemical formulas |
What would smoke be considered as? | colloid |
How do liquid water, ice, and water vapor differ from each other? | They are different states of matter. |
What are colloids? | mixtures |
What can scatter light? | colloids and solutions |
What type of property is the color of ink? | physical |
What type of mixture is a suspension? | heterogeneous |
What is scattering of light by colloids? | the Tyndall effect |
What is the result of two or more substances are combined so that each substance maintains its own properties? | mixture |
What occurs when a gasoline is burned in an engine? | a new substance is formed |
What is another name for a homogeneous mixture? | solution |
Iron and oxygen form rust. Compare the mass of iron and oxygen before the reaction with the mass of rust resulting from the reaction. | The mass of the substances reacting is equal to the mass of the substances resulting from the chemical reaction. |
What type of mixture is a fruit salad? | homogeneous |
What can be separated into simpler parts through differences in physical properties? | mixture |
What are substances considered to be? | elements or compounds |
What type of change is exploding of fireworks | chemical |