Is burning oil a physical or chemical change?

When paper is burnt, it combines with oxygen to form ash and smoke. This is a chemical reaction, because new substances are formed. Burning gas in a Bunsen burner is also a chemical change. The methane gas burns with oxygen in the air to form two new substances: carbon dioxide and water vapour.

Besides, is eroding a chemical or physical change?

Just as in other forms of erosion, such as wind, water, or tectonic activity, chemical erosion changes the surface structure of the rock over time. Examples of Chemical Erosion: 1. Carbonation - When carbon dioxide is present and carried by water, carbonation weathering can occur.

Is bleaching your hair a chemical reaction?

The bleach reacts with the melanin in hair, removing the color in an irreversible chemical reaction. The bleach oxidizes the melanin molecule. The melanin is still present, but the oxidized molecule is colorless. However, bleached hair tends to have a pale yellow tint.

Is dying your hair a chemical or physical change?

Temporary Hair Dye: Physical change because it just lies on the hair shaft. Semi-Permanent: Chemical because it's causing a long-lasting color change. Bleach: Chemical change because the hydrogen peroxide is reacting with the melanin (the part of the hair that gives it the color).

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