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Q3 Matter
| Question | Answer |
|---|---|
| Ms. Welch makes instant Lipton pomegranate tea. The water immediately turnd red. How do you know it is a solution? | The powder spread out evenly and made all of the water red. |
| Describe a suspension. | It is a mixture with visible particles that separates easily into layers. |
| Describe a colloid. | The substance is spread out evenly. It has midsized particles that can be seen under a microscope. |
| Give an example of a colloid | Milk, shaving cream, or clouds |
| Describe a mixture | Two or more different substances NOT chemically joined together. |
| Describe a compound. | Two or more substances that are CHEMICALLY joined together to make a new, unique, substance, |
| How are elements arranged on the periodic table? | By chemical property |
| What ordervare elements in on the periodic table? | By atomic number |
| What is the atomic number? | Number of protons in an element's nucleus. |
| What is the atomic mass? | The mass of protons and neutrons added together. |
| Name 4 properties of metals. | They conduct heat and electricity, they have luster and are shiny, they are malleable and can be rolled into sheets, they are ductile and can be pulled into wire. |
| What is ductility | Metal can be pulled into wire |
| What is luster? | Metal is shiny |
| What is malleability? | Metal can be hammered or rolled into sheets |
| What is conductivity? | Electricity and heat can move through metal. |
| What is a base? | A pH of 8-14 is a base. |
| What number is the most basic? | 14, the higher the number is the more basic it is. The number must be between 6-14. |
| What is an acid? | Think of sour things with a pH 0-6 |
| What types of things are bases? | Soaps, drain cleaners |
| What is the pH of pure water? | 7, it isn't an acid or a base, it is neutral. |
| Recipes are often examples of what? | Mixtures |
| What are protons? | + positive particles in an atom's nucleus |
| What are electrons? | - negative particles floating around outside of the atom's nucleus |
| What are neutrons? | Neutral particles in an atom's nucleus |
| What part of the atom takes up the most volume, space? | Electrons |
| Where is an atom's nucleus? | In the center of the atom. It is surrounded by electrons. |
| Give an example of a solution | Instant tea, Tang, Koolaid, sugar in water, salt in water |
| If an acid and base are combined and they are exactly the same strength what happens? | A neutral solution is the result |
| When elements combine to form compounds what happens? | The elements join chemically to make a NEW substance with different properties |
| Soap and drain cleaner are examples of what? | Bases |
| What is something with a pH of 14 | A strong base |
| What is something with a pH of 0? | A strong acid |
Created by:
MsLWelch
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