First Test Flashcards
What is the Reactivity of an element?
Property that describes whether an element will react chemically with another to form a compound,as well as how quickly it will take place.
What are three charecteristics of metals?
Good conductors of heat and electricity, generally shiny and malleable, and found to the left of the “stairstep line on the periodic table
What are metalloids?
Elements between the metals and non metals, have properties of both metals and non metals
Symbol for Nitrate
No(3)
Symbol for Sulfate
So(4)(-2)
Symbol for Hydroxide
OH(-)
Why do we use distilled water in lab experiments?
So that the chemicals in tap water will not react to the element we are mixing it with.
What is an Atom?
An atom is the smallest unit of an element that maintains the properties of that element.
Definition of Precipitate?
Solid that forms as the result of a chmical reaction in aqueous solution
Definition of Element?
Pure substances that contain only one kind of atom
What is a molecule?
Molecule usually consists of two or more atoms combined in a definite ratio
What is a physical change?
Physical change is a change in the size, shape or phase of matter, without changing it chemically
THIS CAN BE UNDONE
What is a chemical change?
A chemical change is any change that results in the formation of a new chemical substance. At the molecular level,chemical changes involve making or breaking bonds between atoms.
