Chemistry Flashcards
What is matter
Anything that has mass or takes up space
What are physical properties
Characteristics of matter that can be observed or measured without changing its chemical identity
What is the melting point
The temperature at which a substance changes from a solid to a liquid state
What is boiling point
The temperature at which a substance changes from a liquid to a gaseous state
What is malleability
Describes how easily a substance can be hammered or bent into different shapes
What is hardness
Describes the resistance of solid to being scratched or dented
What are 7 physical properties
Melting point, boiling point, malleability, hardness, solubility, viscosity, and density
What is a chemical property
Ability of matter to react with another substance to form one or more new substances. They can only be observed when a substance chemically interacts with another substance
What are the chemical properties
Reactivity with acids, reactivity with oxygen, combustibility, lack of reactivity
What is reactivity with acids
How a substance reacts when exposed to other acids eg:baking soda and vinegar produce gas
What is reactivity with oxygen
How a substance reacts when exposed to oxygen Eg;avocados turning brown
What is combustibility
The ability of a substance to catch fire Eg:wood
What is lack of reactivity
Substances that do not react with other substances are “inert” Eg: helium in a balloon
What are physical changes
changes in matter that do not change it’s chemical identity Eg:freezing water
What are chemical changes
Changes in matter that produce one or more new substances Eg:toasting bread
What is quantitative data
Data described with numbers
What is quantitative data
Data described in number