(1) What is a chemical change?

(2) Coal forms by a slow process of chemical change.

(3) A chemical change takes place in any substance when it burns.

(4) Atomic theory explained chemical change as the rearrangement of unchanging atoms(Sentencedict), and therefore in a sense as superficial.

(5) This chemical change can be expressed by an equation.

(6) We saw that a chemical change had taken place.

(7) The chemical change off heat and light.

(8) New material can be brought about through chemical change.

(9) Any chemical change in the mother's blood will affect the child for better or worse.

(10) Wherever a chemical change takes place , there is a new substance formed.

(11) A chemical change takes place in paper when it burns.

(12) The change in the enamels is a chemical change which hardens the film and is non - reversible.

(13) The chemical change gives off [ out ] heat and light.

(14) Microorganisms are the agents that bring about the chemical change.

(15) A chemical change always results in forming at least on new substance.

(16) The chemical change of four resole type phenol-formaldehyde resins in curing process was studied by infra-red spectroscopy.

(17) When rust is formed(), a chemical change has taken place.

(18) Whenever a chemical change takes place, There is a new substance formed.

(19) The chemical change absorbing heat is named an end – thermal reaction.

(20) Researchers looked for - and found - a chemical change called DNA methylation in healthy tissue adjacent to breast tumors.

(21) When two or more elements combine and form a compound, a chemical change takes place.

(22) Weary is one kind of toxicant phenomenon which in the cell the chemical change derivation causes.

(23) Our infrared emission spectroscopy technology has been shown to be an effective method for analyzing chemical change in friction process.

(24) Any change that results in forming a new substance is a chemical change.

(25) The maintenance of a physical quantity, such as energy or mass, during physical or chemical change.

(26) Heat and light can be given off by this chemical change.

(27) Thermoplastic materials can be remelted and cooled time after time without undergoing any appreciable chemical change.

(1) What is a chemical change?

(2) When two or more elements combine and form a compound, a chemical change takes place.