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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