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Which pair of terms best describes the type of change that occurred in the reaction hydrogen plus oxygen leads to water plus energy?
Wiki User
∙ 11y ago
chemical and exothermic
Wiki User
∙ 11y ago
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Is reaction of hydrogen chloride gas and water a physical change or chemical change?
It's a chemical change
Is adding sodium to water a chemical change?
Yea it is a chemical change. The Sodium reacts with water in a chemical reaction in which the sodium displaces the hydrogen in the water, creating sodium oxide and hydrogen gas. The heat from the reaction ignites the hydrogen, which creates the explosion.
When hydrogen peroxide is poured on a cut on a persons skin the hydrogen peroxide breaks down into water and oxygen gas what type of change is this?
This is a chemical reaction. A decomposition reaction.
How will you know that a chemical reaction has occurred?
Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion- possible chemiluminescence- formation of new compounds
Which pair of tearms best describes the type of change that occurred in the reaction?
okey the cuation is that hay donde andertant decause y dont leard inglis im a japon country and lala is a song of the hameiquinos yeahhh
What is the ratio of hydrogen atoms before the reaction to after the reaction?
1:1 The number of atoms does not change in a reaction.
How does a chemical equation show that a chemical reaction has occurred?
A chemical equation shows that chemical reaction has occurred as new substances have been formed from the reagents. A chemical equation has two sides before reaction and after reaction, if there is any change from the before reaction side to the after reaction side, it indicates that a chemical reaction has just occurred.
Is reaction of hydrogen chloride gas and water a physical change or chemical change?
It's a chemical change
How does the boiling point of a hydrocarbon change in presence of hydrogen?
It can NOT be changed by the presence of hydrogen without chemical reaction.
What is the only sure evidence for a chemical reaction?
The only way to be sure a chemical reaction or change has occurred is to test the composition of a sample before and after a change.
When substances are formed that are different from the starting substances has physical change occurred?
A chemical reaction is a chemical change.
Is adding sodium to water a chemical change?
Yea it is a chemical change. The Sodium reacts with water in a chemical reaction in which the sodium displaces the hydrogen in the water, creating sodium oxide and hydrogen gas. The heat from the reaction ignites the hydrogen, which creates the explosion.
What kind of change happens when hydrogen gas and oxygen gas react burn and form water?
This reaction is a chemical change.
What statement best describes a change that occurred during both the Renaissance and the Enlightenment?
Both the Renaissance and the Enlightenment emphasized the importance of human potential and achievement, leading to a shift in focus from religious authority to individual reason and creativity.
What Describes a double replacement reaction?
In a double replacement reaction a change of bonds between reactants occur.
What describes a change that occurs when one substance reacts with another substance?
reaction Chemical change.
When hydrogen peroxide is poured on a cut on a persons skin the hydrogen peroxide breaks down into water and oxygen gas what type of change is this?
This is a chemical reaction. A decomposition reaction.
