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Is formation of water when hydrogen burns a chemical change or a chemical property?
It's a chemical change. Any time you have a change in the chemical formula of a substance, you have a chemical change. The chemical formula of hydrogen is H[2], and the chemical formula of oxygen is O[2]. The chemical formula of water is H[2]O. 2 H[2] + O[2] --> 2 H[2]O. If you were watching this happen in a lab, you'd watch two colorless gases react to form a single colorless liquid. A change in state (solid, liquid, or gas) that cannot be due to heating or cooling is nearly always a sign of a chemical change.
What is the equation for calculating the change in enthalpy of a system during a chemical reaction?
The equation for calculating the change in enthalpy of a system during a chemical reaction is H H(products) - H(reactants), where H represents the change in enthalpy, H(products) is the enthalpy of the products, and H(reactants) is the enthalpy of the reactants.
Is it possible for the change in enthalpy, represented as H, to have a negative value in a chemical reaction?
Yes, it is possible for the change in enthalpy (H) to have a negative value in a chemical reaction, indicating that the reaction releases heat energy.
How can one determine the change in enthalpy for a given chemical reaction?
To determine the change in enthalpy for a chemical reaction, one can use the equation H H(products) - H(reactants), where H is the change in enthalpy, H(products) is the sum of the enthalpies of the products, and H(reactants) is the sum of the enthalpies of the reactants. This calculation helps to quantify the heat energy absorbed or released during the reaction.
How can one determine the change in enthalpy (H) for a chemical reaction?
One can determine the change in enthalpy (H) for a chemical reaction by measuring the heat released or absorbed during the reaction using a calorimeter. The difference in heat between the products and reactants gives the enthalpy change.
Is formation of water when hydrogen burns a chemical change or a chemical property?
It's a chemical change. Any time you have a change in the chemical formula of a substance, you have a chemical change. The chemical formula of hydrogen is H[2], and the chemical formula of oxygen is O[2]. The chemical formula of water is H[2]O. 2 H[2] + O[2] --> 2 H[2]O. If you were watching this happen in a lab, you'd watch two colorless gases react to form a single colorless liquid. A change in state (solid, liquid, or gas) that cannot be due to heating or cooling is nearly always a sign of a chemical change.
What is the equation for calculating the change in enthalpy of a system during a chemical reaction?
The equation for calculating the change in enthalpy of a system during a chemical reaction is H H(products) - H(reactants), where H represents the change in enthalpy, H(products) is the enthalpy of the products, and H(reactants) is the enthalpy of the reactants.
What is a cheimical change?
A chemical change involves the breaking and forming of bonds.For example:CH4 + 2O2 = CO2 + 2H20In this overall stoichiometric reaction, 4 C-H single bonds and 2 O=O double bonds were broken. Then 4 H-O single bonds and 2 C=O double bonds were formed. A chemical change has taken place.
Is it possible for the change in enthalpy, represented as H, to have a negative value in a chemical reaction?
Yes, it is possible for the change in enthalpy (H) to have a negative value in a chemical reaction, indicating that the reaction releases heat energy.
How can one determine the change in enthalpy for a given chemical reaction?
To determine the change in enthalpy for a chemical reaction, one can use the equation H H(products) - H(reactants), where H is the change in enthalpy, H(products) is the sum of the enthalpies of the products, and H(reactants) is the sum of the enthalpies of the reactants. This calculation helps to quantify the heat energy absorbed or released during the reaction.
What does the delta h of a reaction represent?
Either the change (which the delta refers to) of the height (which the h represents).
How can one determine the change in enthalpy (H) for a chemical reaction?
One can determine the change in enthalpy (H) for a chemical reaction by measuring the heat released or absorbed during the reaction using a calorimeter. The difference in heat between the products and reactants gives the enthalpy change.
What are 2 examples of chemical symbols?
H (hydrogen) HE (helium)
Does a nuclear change result from a chemical reaction?
Nope. (Well, the chemical reaction of the high explosives in an A- or H-bomb warhead result in high pressure that then results in a nuclear change (BOOM), but that's a side-effect, not a direct result of the chemical change.)
What is the relationship between the change in enthalpy (H), specific heat capacity (Cp), and the change in temperature (T) in a chemical reaction or physical process?
The relationship between the change in enthalpy (H), specific heat capacity (Cp), and the change in temperature (T) in a chemical reaction or physical process is described by the equation H Cp T. This equation shows that the change in enthalpy is directly proportional to the specific heat capacity and the change in temperature.
When placed in H a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms is it physical change or chemical change?
The reaction of a sodium pellet in water (H₂O) is a chemical change. This is because it involves the transformation of sodium into sodium hydroxide (NaOH) and the liberation of hydrogen gas (H₂), indicating the formation of new substances. The burning of sodium and the release of gas are also characteristic of chemical reactions, as they involve changes in the chemical structure of the reactants.
When milk turns sour is that a chemical change?
Yes, when milk turns sour it undergoes a chemical change. This change is due to the action of bacteria breaking down lactose into lactic acid, leading to the sour taste and change in texture of the milk.
