Matter by Jacob Cheatum Flashcards
(22 cards)
What is matter ?
Matter is anything that has mass or takes up space .
What is chemistry ?
Chemistry is about what things are , What their properties are , and how they interact and change .
What is a element ?
Is a substance that can not be broken down in a chemical way.
What is a atom?
Is the smallest unit of a element , but contains the properties of a element .
What is a compound ?
A compound is a substance made up of atoms that have two or more elements that are combined by chemical means .
What is a molecule ?
A molecule is the smallest unit of a substance that contains all of the physical and chemical properties .
What is a chemical formula ?
It is a combination of chemical symbols and numbers to represent a substance .
What is a pure substance ?
Either single element or single compound that has definite chemical properties .
What is a mixture ?
A mixture is a assortment of substances that can be separated from each other .
What is a heterogeneous mixture ?
Is when substances are not mixed uniformly and do not have equal parts .
What is a homogenous mixture ?
A homogenous mixture has even distribution
What is a miscible ?
Is when two or more liquids can mix together
What is immiscible ?
When two or more liquids do not have the ability to mix together .
What is a melting point ?
The temperature at which a solid becomes a liquid .
What is a boiling point ?
The temperature that liquid becomes a gas .
What is density?
The ratio of the mass of a substance to the volume of a substance ?
What is reactivity ?
The ability for a substance to combine chemically with another substance .
What is flammability ?
When a substance can react in the existence of oxygen and burn when exposed to a flame .
Physical properties ?
You can observe physical properties without changing the substance .
What are chemical properties ?
To observe chemical properties you have to change the identity of the substance .
What is a Chemical change ?
A chemical change is when a substance forms new chemical properties .
What is a physical change ?
A physical change is when a change is not made involving or changing the substances chemical properties.
