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When you combust hydrogen in air, the hydrogen will combine with oxygen to form water. Therefore, the hydrogen and oxygen are undergoing a chemical change to become bonded together producing H2O: 2H2 + O2 → 2H2O + Heat
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If making ammonia from nitrogen and hydrogen A chemical or physical change?
chemical..
It reacts with hydrogen to form a gas. Is it a chemical or physical property of sulfur?
it is chemical change
Is chlorine gas liquefies at 35 degree celsius under normal pressure a chemical or a physical change?
chemical
When placed in H2O a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms chemical or physical change?
It is a Chemical change
Sodium metal in chlorine gas releases energy is it a physical property?
No this is a chemical change- sodium reacts with chlorine gas to form sodium chloride and a lot of heat.
When hydrogen burns in chlorine gas it is a physical or chemical change?
Chemical, producing hydrogen chloride which when added to water produces hydrochloric acid.
Is sodium and chlorine a physical change or a chemical change?
chemical
Is the change between sodium and chlorine a physical change or chemical?
chemical
Is reacts violently with chlorine physical or chemical?
this is a chemical change.
Is does not react with hydrogen a physical or chemical change?
Chemical
Is combining hydrogen and oxygen a physical change or a chemical change?
This is a chemical change.
Is chlorine gas becoming a liquid a physical or chemical change?
It is a physical change because the chemical composition has not changed.
Is reacts violently with chlorine physical or chemical property?
this is a chemical change.
When an object does not react with hydrogen is that a chemical change or physical change?
Easy, chemical change.
Is hydrogen burning a physical or chemical change?
burning in presence or absence of oxygen is a chemical change.
Is a reacts with an acid to from hydrogen physical or chemical?
chemical change
Is the dissolving salt in water a chemical or physical change?
It is a chemical change because of sodium and hydrogen bonds forming
