No, a saxophone has keys like other woodwind instruments. Brass instruments have valves.
A trombone has a slide, which other brass instruments lack.
That depends on the music. Most often, it is played in a band, with other brass instruments, woodwind instruments, and percussion instruments. It is also played in the orchestra, with other brass instruments, woodwinds, and strings. It can be played in ensembles with other trumpets or brass instruments. Or, it can be played with piano accompaniment.
Saxophones are a family of instruments invented by Adolphe Sax, who gave them his name. They are made of brass, like trumpets and other brass instruments, have a conical bore, like brasses and also some woodwinds, but are keyed like a woodwind and have a single reed like a clarinet. They range from high pitched soprano to low-pitched bass.
Adolphe Sax invented the saxophone, patented the entire family of saxes and actually made the first instruments. He called the instruments he made saxophones, and by the time other manufacturers could make them, that's how they were known by the public. He did the same thing with a family of brass instruments known as sax horns, which were popular in the late 1800's and are still used to some degree today.
Brass is a rust-resistant metal compound that was relatively easily and inexpensively obtained by our ancestors, polishes easily, is malleable and has interesting musical properties at various thicknesses. Brass is comparatively light-weight compared to the other metals historically available. It should be noted that in modern times saxophones have been made of other materials, namely fiberglass. These instruments do not have the same tonal qualities as brass saxophones, and so are not widely used for anything other than training.
saxophone, clarinet and other instruments you would normally hear.
The trombone is the only instrument in the brass section with no keys or valves. It only has a slide.
The different classification of instruments are: Wind Instruments, e.g. saxophone, flute, clarinet, etc; Percussions and drums, e.g. clef, cymbals, brass, konga; etc; Electrical Instruments, e.g. Keyboards; String Instruments, e.g. Guitars, violin, cello, viola, etc; Brass Instruments, e.g. trumpet, trombone, tuba, etc.
It has a slide, rather than buttons.
It has a slide, rather than buttons.
Brass instruments tend to be made out of brass or other metals/alloys. Woodwind instruments have reeds, which makes a different sound to the brass instrument (in simple terms you have to blow raspberries into to make a sound- it is a little more complecated than that, but its hard to explain).