Matter | Properties | Laws | Mixture of Matter | Miscellaneous |
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What is matter
Anything that has mass and takes up space
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What is chemical reaction
Another name for chemical change, a process that involves one or more substances changing into a new substance
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What is the law of conservation of mass
Mass is neither created or destroyed during a chemical reaction, it is conserved
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What is mixture
The number of these possible to create are infinite
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What is an element
Pure substance that cannot be separated into simpler substances by physical or chemical means
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What is a pure substance
Table salt is an example of this
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What is phase change
Transition of matter from one state to another
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What is the law of definite proportions
A compound is always composed of the same elements in the same proportion by mass, regardless of the sample size
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What is heterogeneous
Salad dressing is an example of this mixture, whose composition is not uniform and substances do not blend smoothly
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What are groups/families
Elements that have similar chemical and physical properties are classified as this
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What is a solid
Concrete and Wax
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What is physical change
Condensation, solidification and boil are all key words for this process
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What is Mass of Element divided by Mass of Compound multiplied by 100
This formula tells us the ratio of the mass of each element to the total mass of the compound expressed as a percentage
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What is gas-liquid
When oxygen and carbon dioxide are dissolved in seawater this type of system is in play
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What are compounds
Using heat or electricity, one can separate these into simpler substances
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What is a vapor
Gasesous state of substance that is a solid or liquid at room temperature
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What is chemical change
Aluminum combing with oxygen to form aluminum oxide is an example of this
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What is the product
A student carefully placed 15.6g of sodium in a reactor supplied with an excess quantity of chlorine gas. When the reaction was complete, the student obtained 39.7g of sodium chloride. Sodium chloride is this part of the equation
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What is crystallization
Separation technique that results in the formation of pure solid particles of a substance from a solution containing dissolved substances
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What is water
At room temperature, this is a stable compound that when broken down becomes highly reactive with many elements
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What is extensive
Mass, length, and volume are dependent on the amount of substance present, which makes them this type of properties
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What is a physical change
The process when at atmospheric pressure and 0 degrees Celsius, water is ice. As heat is added to the ice, it melts and becomes liquid water. When the temperature increases up to 100 degrees Celsius, water boils and becomes steam
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What is 8.4g Carbon / 20.0g Sucrose x 100
A 20.0g sample of sucrose contains 8.4g carbon. This is the setup to determine mass percentage of sucrose
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What is sublimation
Process during which a solid changes to vapor without melting
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Who is Dmitri Mendeleev
His most famous contribution to chemistry came in the form of a chart, which organized all of the elements that were known at the time
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