| | | |
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 | |