Question

1. which of the following tests would be a correct way to separate a certain mixture?

a use a magnet to separate the metal parts
b use a filter to evaporate particles
c use a hotplate to filter large particles
d use a magnet to separate wood chips

Explanation:

• Magnets can attract metal parts, so using a magnet to separate metal parts from a mixture is a valid separation method.
• A filter is used to separate solids from liquids (filtration) or larger particles from smaller ones, not for evaporation. Evaporation is a different process (e.g., heating a liquid - solid solution to remove the liquid).
• A hotplate is used for heating, not for filtering large particles. Filtration is typically done with a filter medium (like filter paper).
• Magnets do not attract wood chips (wood is non - magnetic).

Answer:

A. Use a magnet to separate the metal parts