0
What else can I help you with?
How does the temperature of a substance change as it gains or loses heat?
A substance (in this case water) that gains or loses 'sensible' heat will change it's temperature at the rate of 1 deg F per pound of that substance per 1 btu loss or gain.That is to say that 1 pound of water will change 1 deg f as it loses or gains 1 btu of heat energy. That heat required to lose or gain 1 deg f is referred to as sensible heat, whether lost or gained, since it does change the temperature of the substance.However, that substance must gain or lose latent heat during a change of state; as in water changing from liquid to gas (steam). Latent heat affects the substance during it's change of state, and does not change the temperature of the substance during that change of state.Each substance has a specific heat, and so each substance has a different value of btu's required to make a change in their state or temperature.
What physical property can not identify a substance?
state of matter for example,you cannot say a liquid is water because it is liquid,so state of the substance is a physical property that is very uncertain in deducing what the substance is.
Why is not proper the gaseous state of carbon dioxide as vapor?
It is not proper to say "Vapour is a proper name for the gaseous state of carbon dioxide" because carbon dioxide is not present as liquid under natural circumstances. The gaseous state of a substance ABOVE its own fluid (or dissolved in a solution) is called vapour of that particular compound.
Why do changes of state happen at a constant temperature?
It takes energy to alter temperature, and it also takes energy to change state, at least in the direction of more energetic states, which is to say, to melt a solid or to vaporize a liquid. If energy is being consumed by the change of state itself, then there is no energy available to change the temperature. So the temperature remains constant. In practice, this means for example that things boil at the boiling point. Boiling water is always exactly 100o Celsius. It can get no hotter until it is all boiled. The steam, of course, can then get hotter.
When can you say that a substance is homogeneous?
when can we say that a subtance is homogenous
How does the temperature of a substance change as it gains or loses heat?
A substance (in this case water) that gains or loses 'sensible' heat will change it's temperature at the rate of 1 deg F per pound of that substance per 1 btu loss or gain.That is to say that 1 pound of water will change 1 deg f as it loses or gains 1 btu of heat energy. That heat required to lose or gain 1 deg f is referred to as sensible heat, whether lost or gained, since it does change the temperature of the substance.However, that substance must gain or lose latent heat during a change of state; as in water changing from liquid to gas (steam). Latent heat affects the substance during it's change of state, and does not change the temperature of the substance during that change of state.Each substance has a specific heat, and so each substance has a different value of btu's required to make a change in their state or temperature.
What physical property can not identify a substance?
state of matter for example,you cannot say a liquid is water because it is liquid,so state of the substance is a physical property that is very uncertain in deducing what the substance is.
What physical property can identify a substance?
state of matter for example,you cannot say a liquid is water because it is liquid,so state of the substance is a physical property that is very uncertain in deducing what the substance is.
Does the temperature increase decrease or stay the same during a change of state please say which or all?
During a change of state, temperature usually stays the same. When a substance is changing from solid to liquid or liquid to gas, the energy is used to break intermolecular bonds rather than increase the temperature. This is known as the latent heat of fusion or vaporization.
What happen to volume of substance when placed say in a freezer?
A number of factors have to be considered, the state of the substance, solid, gas or liquid. The condensation and freezing point of the substance. The temperature inside the freezer. The pressure Most, but not all, substances reduce in volume and increase in density when cooled. Water for instance, reduces in density when frozen.
The temperature at which a given substance will change from a liquid into a gas?
The temperature in which a given substance will change from a liquid to a gas is its boiling point. Every element, compound and mixture has a different boiling point. Use an SI data book or the internet to find the boiling point of a particular suubstance.
Why is not proper the gaseous state of carbon dioxide as vapor?
It is not proper to say "Vapour is a proper name for the gaseous state of carbon dioxide" because carbon dioxide is not present as liquid under natural circumstances. The gaseous state of a substance ABOVE its own fluid (or dissolved in a solution) is called vapour of that particular compound.
How does a substance's boiling point or melting point determine its state at room temperature?
If its still a solid at room temperature then to melt it would have to be at a higher temperature than 20 degrees. If its still a solid at room temperature then to melt it would have to be at a higher temperature than 20 degrees.
If you have the heat of formation of a substance at a given temperature how do you calculate its heat of formation at a different temperature?
To calculate the heat of formation of a substance at a different temperature, you can use the heat capacity of the substance to adjust for the change in temperature. You would need to integrate the heat capacity over the temperature range to determine the change in enthalpy and then correct the heat of formation using this adjusted value.
When oxygen is added to a substance you say that it is?
When oxygen reacts with a substance we say the substance has been oxydized.
Is oxygen not ductile?
The term doesn't apply in this case. You can only say whether a substance is ductile if it is a solid. Oxygen is a gas at room temperature.
What does state or phase mean?
In chemistry, a phase refers to a physically distinctive form of matter, such as a solid, liquid, or gas. A state, on the other hand, typically refers to the specific conditions of a system, including factors like pressure and temperature, that determine the phase of a substance.
