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Unit 2 Chem Test
Energy And Matter
| What is a compound ? | A substance containing two or more different elements combined into a fixed ratio. | ||
| What is a heterogeneous mixture ? | Have visibly different parts | ||
| What is a homogeneous mixture ? | Mixtures that do not contain visibly different parts. | ||
| What is mass ? | The quantity of matter in a object. | ||
| What is an example of Filtration ? | Making coffee | ||
| What are three things that is and is not matter | Matter : Soda Can,water,fish | Not matter :time,an idea, energy | Not matter :time,an idea, energy |
| Which has more mass a bowling ball or basketball? How do you know ? | A bowling ball because the matter inside of a basketball is air so there is no matter . | ||
| What is a physical property ? | Any property used to characterize matter and energy and their interactions | ||
| What are 5 examples of physical properties? | 1.Color 2.Hardness 3.Texture 4.Shine 5.melting point | ||
| What is a chemical property ? | a property used to characterize materials in reactions that change their identity | ||
| What are three examples of chemical properties? | 1.Rust 2.Tarnish 3.Burn | ||
| What is a chemical and physical change that could happen to a block of wood? | A physical change is you can cut it in half. | A chemical change is if you burned it for fire. | |
| What is the absolute zero on the Kelvin scale? | Zero Kelvin or - 273 Celsius | ||
| How do you convert -55 degrees Celsius to Kelvin ? | -55 + 273 = 218 Kelvin | ||
| What is the Law of Conversation of Energy ? | In any process, energy is neither created nor destroyed,but energy may be converted into other forms. | ||
| How do you convert 250 K to Celsius ? | 250+273= 523 Celsius | ||
| What is a extensive property ? | A property that does depend upon how much you have | ||
| What are 3 examples extensive property ? | 1.Volume 2.Mass 3.Height | ||
| What are the only two pure substance that can be classified as a pure substance ? | Al,He | ||
| What are three heterogeneous mixtures ? | Chocolate chip cookies,granite, | ||
| What distinguishes a pure substance from a mixture. | A mixture is a blend of two or more pure substances but a pure substance is matter that is uniform . | ||
| How is the first letter of a chemical symbol always written ? | A chemical symbol always start with a capital letter. | ||
| What form of energy comes from motion ? | Kinetic | ||
| What is energy ? | The capacity to do work or produce heat. | ||
| How many joules does 1 calorie equal? | 4.182 | ||
| How do milliliters (mL) compare to centimeters cubed?( cm3) | 1 cm3 = 1 mL | ||
| What unit of measure is commonly used in a chem lab? | Liters and milliliters | ||
| What unit of volume is mostly commonly used in an chem lab ? | cm3 | ||
| What equipment is commonly used to find volume of a liquid ? | graduated cylinder | ||
| What unit of mass is commonly used in a chem lab ? | grams | ||
| What equipment measures mass ? | Balance scale | ||
| What are three examples of of a compound ? | Water,Salt ,and Carbon Dioxide | ||
| How can the weight of an object change with the mass remaining the same ? | The weight of an object is dependent on the environment while mass remains the same in all environments. | Like in space |
Created by:
kaylawill16
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