For example the melting of this powder.
The transformation of magnesium into a white powder when it burns is a chemical change. This is because a new substance (magnesium oxide) with different properties is formed as a result of the chemical reaction between magnesium and oxygen.
Magnesium is not a change of any sort. It is a metallic element that can undergo both physical an chemical changes.
Heating magnesium is a physical process.But the reaction of magnesium with oxygen at high temperature is a chemical process.
Hi
the epsom salt of magnisium is used as theTalcum powder.
The transformation of magnesium into a white powder when it burns is a chemical change. This is because a new substance (magnesium oxide) with different properties is formed as a result of the chemical reaction between magnesium and oxygen.
Powdery is an adjective which not require any change!You can have a physical change where a large lump of some substance is ground into powder. Or you can have a chemical change (eg magnesium burning) which leaves a powdery residue.
Magnesium is not a change of any sort. It is a metallic element that can undergo both physical an chemical changes.
It's a physical change because it might be in a different form but it's still magnesium
When magnesium sulfate dissolves in water, it undergoes a physical change, not a chemical change. The molecules of magnesium sulfate are simply dispersed in the water, but no new chemical substances are formed.
Heating magnesium is a physical process.But the reaction of magnesium with oxygen at high temperature is a chemical process.
The reaction between magnesium and oxygen to form magnesium oxide is a chemical change. This is because new substances with different properties are formed during the reaction.
Grinding chalk really doesn't change the chalk except to make it into powder. So that makes it a physical change. It is much like ice melting into water.
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Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.
the epsom salt of magnisium is used as theTalcum powder.
Burning a magnesium ribbon is a chemical change because the magnesium reacts with oxygen in the air to form magnesium oxide. This results in a new substance being formed with different chemical properties than the original magnesium ribbon.