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What happens to the number of molecules of the gas when it is compressed?
When a gas is compressed, the volume it occupies decreases, causing the gas molecules to be closer together. The number of molecules remains the same, as no molecules are added or removed during compression.
Is it possible for the number of molecules to change as a result of a chemical reaction?
That happens all the time. Smaller molecules combine to form larger molecules; larger molecules break up into smaller molecules.
Is dissolving powder into water a chemical change?
No, dissolving powder into water is a physical change, not a chemical change. The powder molecules are still the same chemical compounds as they were before dissolving, just dispersed in the water molecules.
What physical change happens to the water from the dye solution?
The physical change that happens to the water from the dye solution is that it gets colored. The water molecules themselves do not change chemically, but they become colored by the dye molecules that dissolve in the water.
Is The starch in the pizza crust turns to sugar physical or chemical change?
The conversion of starch in the pizza crust to sugar is a chemical change. This process, known as hydrolysis, involves the breaking down of starch molecules into sugar molecules by reacting with water.
What happens in a chemical change but not in a physical?
Molecules permanently change. In a physical change the effects are reversible.
What happens to atoms and molecules when a chemical change occurs?
They get rearranged to form new products.
What happens to the atom or molecules of a substance if it melts?
Nothing. Melting is a physical change and does not alter the chemical composition of a substance.
Is it a chemical or physical change when energy in food molecules is transferred into molecules of ATP?
It is a chemical change. The process involves breaking down the chemical bonds in food molecules to release energy, which is then used to synthesize ATP molecules through chemical reactions within the body.
What does chemical change produce?
After a chemical change new molecules are obtained.
Is the breaking down of molecules a chemical or physical change?
It is a chemical change.
What happens to a sample of matter when it undergoes a chemical change?
The reactants are transformed in products, substances with another type of molecules and properties.
Why is there no chemical equation to describe what happens when water evaporates?
That's because there is no chemical change. In most cases, there is no chemical change when a substance evaporates. The exception is very long molecules, which may break apart during evaporation.
What happens to the number of molecules of the gas when it is compressed?
When a gas is compressed, the volume it occupies decreases, causing the gas molecules to be closer together. The number of molecules remains the same, as no molecules are added or removed during compression.
Is it possible for the number of molecules to change as a result of a chemical reaction?
That happens all the time. Smaller molecules combine to form larger molecules; larger molecules break up into smaller molecules.
What does chemical produce?
After a chemical change new molecules are obtained.
Is starch molecules that are formed from smaller glucose molecules a chemical or physical change?
The formation of starch molecules from smaller glucose molecules is a chemical change. This is because the molecular structure of glucose is altered during the process of forming starch, involving chemical bonds being broken and new bonds being formed.
