classify the following as physical change or chemical change
Answers
Explanation:
Classify the following as chemical or physical changes: a. Cutting of treesb. Melting of butter in a pan c. ... If the chemical composition is changing then it is a chemical change and if the chemical composition is remaining the same, then it is a physical change.
Physical change
A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.hemical change
Chemical change
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently
Explanation:
a. Cutting of trees – Physical change
b. Melting of butter in a pan – Physical change
c. Rusting of almirah – Chemical change
d. Boiling of water to form steam – Physical change
e. Passing of electric current through water and the water breaking down into hydrogen and oxygen gases – Chemical change
f. Dissolving common salt in water – Physical change
g. Making a fruit salad with raw fruits – Physical change
h. Burning of paper and wood – Chemical change