Wood, treated and plastic (PVC) coated wood, aluminium and aluminium alloys, polyvinylchloride.
plastic
They are made of compounds not elements unless they are Iron or Aluminum window frames. Most window frames were made of wood but UPVC is becoming more popular.
Aluminum window frames after being squared off and matched up are riveted together. Either a glass pane is fitted inside the frame before assembly, or a screen is stretched after it is secured.
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No compounds make up elements. Elements make up compounds, so there are no compounds in cadmium since it is an element.
12
Yes, there are frames that have a built in light and even frames that have a moving picture that lights up.
Calcium is an element, so calcium makes up calcium.
Sulfur is an element in its own right. So the only element that makes up sulfur is sulfur.
1 atom make up the element carbon.It has atomic number 6.
CuSO4 isn't an element.
gallium is an element