Chemical digestion involves the formation of new substances and the production of bile by the liver.

1. Formation of new substances: This is the main aspect of chemical digestion. It involves breaking down the food we eat into smaller molecules that our body can absorb. This is done by enzymes, which are biological catalysts that speed up the chemical reactions in our body. For example, the enzyme amylase breaks down carbohydrates into simple sugars.

2. Bile produced by the liver: Bile is a substance produced by the liver and stored in the gallbladder. It is released into the small intestine during digestion. Bile helps to break down fats into smaller droplets that can be easily digested by enzymes.

The other two options you mentioned - grinding, mashing or churning, and mixing substances together - are more related to mechanical digestion. This is the physical breakdown of food into smaller pieces, which happens mainly in the mouth (through chewing) and the stomach (through churning).

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Chemical digestion involves the formation of new substances and the production of bile by the liver.

1. Formation of new substances: This is the main aspect of chemical digestion. It involves breaking down the food we eat into smaller molecules that our body can absorb. This is done by enzymes, which are biological catalysts that speed up the chemical reactions in our body. For example, the enzyme amylase breaks down carbohydrates into simple sugars.

2. Bile produced by the liver: Bile is a substance produced by the liver and stored in the gallbladder. It is released into the small intestine during digestion. Bile helps to break down fats into smaller droplets that can be easily digested by enzymes.

The other two options you mentioned - grinding, mashing or churning, and mixing substances together - are more related to mechanical digestion. This is the physical breakdown of food into smaller pieces, which happens mainly in the mouth (through chewing) and the stomach (through churning).

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Chemical digestion involves the formation of new substances and the production of bile by the liver.

1. Formation of new substances: This is the main aspect of chemical digestion. It involves breaking down the food we eat into smaller molecules that our body can absorb. This is done by enzymes, which are biological catalysts that speed up the chemical reactions in our body. For example, the enzyme amylase breaks down carbohydrates into simple sugars.

2. Bile produced by the liver: Bile is a substance produced by the liver and stored in the gallbladder. It is released into the small intestine during digestion. Bile helps to break down fats into smaller droplets that can be easily digested by enzymes.

The other two options you mentioned - grinding, mashing or churning, and mixing substances together - are more related to mechanical digestion. This is the physical breakdown of food into smaller pieces, which happens mainly in the mouth (through chewing) and the stomach (through churning).

chemical digestion involves:the formation of new substancesgrinding, mashing or churningbile produced by the livermixing substances together

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