Sublimation is a technique that helps chemists to

  • break
  • purify
  • melt
  • freeze

A coffee filter is used to separate the coffee liquid from the ground, this is a suitable example for

  • sublimation
  • distillation
  • filtration
  • evaporation

Other than symbols, chemical formulas also contain

  • instant number
  • cellular number
  • oxidation number
  • atom number

Chromatography is generally used by

  • chemists
  • farmers
  • magician
  • Nurses

Copper is mostly used in

  • roofing
  • construction
  • electrical equipment
  • plumbing

The remaining solid on the filter paper is known as

  • solution
  • stone
  • particles
  • residue

The letter used to identify an element in the periodic table is known as

  • formula
  • idea
  • symbol
  • hint

Iron, cobalt and nickel are metals which are

  • non-magnetic
  • magnetic
  • insulator
  • none of them

Elements that are brittle and cannot be rolled into wires are known as

  • liquid
  • non-elastic
  • non-metal
  • metal

The symbol for silver in the periodic table is

  • Ag
  • Au
  • Al
  • Li
The chemical symbol for nitrogen gas is
  • P
  • S
  • N
  • Ne
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