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Which property of water is demonstrated when we sweat?
The property of water demonstrated when we sweat is its high specific heat capacity, which allows it to absorb a lot of heat energy before increasing in temperature. Sweat evaporates from our skin, taking heat with it and cooling us down.
What is an effect of a chemical change?
A chemical change is when substances become new substances that cant go back to its physical properties (the ability to participate in chemical reactions). Chemical changes usually absorb or let off heat. Often, a second chemical change is needed to reverse an initial chemical change. A chemical change is when substances become new substances that have different chemical properties (the ability to participate in chemical reactions). Chemical changes usually absorb or let off heat. Often, a second chemical change is needed to reverse an initial chemical change.
What is the significance of the change in enthalpy, represented by the keyword delta H, in chemical reactions?
The change in enthalpy, represented by the symbol H, is significant in chemical reactions because it indicates whether the reaction is exothermic (releasing heat) or endothermic (absorbing heat). This helps us understand the energy changes involved in the reaction and predict its feasibility and direction.
What does chemical property mean in science?
Chemical properties refer to the characteristics of a substance that describe its ability to undergo a chemical change or reaction. These properties include things like flammability, reactivity with other substances, and acidity. Chemical properties help us understand how a substance interacts with other materials on a molecular level.
What is the significance of the sign of enthalpy change in chemical reactions?
The sign of the enthalpy change in a chemical reaction indicates whether the reaction is exothermic (negative sign) or endothermic (positive sign). This is important because it tells us if heat is being released or absorbed during the reaction, which can affect the overall energy balance of the system.
Is photosynthesis a chemical property?
The energy provided by absorbing light can substitute for the heat energy that usually accelerates chemical reactions. More fundamentally, any endothermic chemical reaction can occur because an increase in entropy compensates for any heat absorbed by the reaction to make the free energy change negative.
What subatomic particles help us to identify an atoms chemical property?
Protons! :)
Why is temperature not a chemical change?
Temperature change, more accurately, a change in heat, is not a chemical change because it does not happen on a chemical level. Heat is the product of varying levels energy, not physically tangible particles. The higher the energy the higher the heat. To clear up any further confusion, a lot of people think heat is a chemical process, but it's not. Most people that think this, do so because the first way most of us imagine this change is through exothermic (reactions that create heat) reactions which are chemical processes like explosions.
The property of a substance that tell us how much the temperature changes when heat is added?
mealting point
Is volume physical or chemical?
Volume is a physical property that allows us to quantify the space that matter occupies. Chemical properties, on the other hand, relate to the behavior of substances at the molecular level.
What is the relationship between the heat of reaction and a chemical reaction?
The heat of reaction is the amount of heat energy released or absorbed during a chemical reaction. It is a measure of the reaction's energy change. The relationship between the heat of reaction and a chemical reaction is that the heat of reaction indicates whether a reaction is exothermic (releases heat) or endothermic (absorbs heat). This information helps us understand the energy changes that occur during the reaction.
Which property of water is demonstrated when we sweat?
The property of water demonstrated when we sweat is its high specific heat capacity, which allows it to absorb a lot of heat energy before increasing in temperature. Sweat evaporates from our skin, taking heat with it and cooling us down.
What items make up Installation Real Property in the US Army?
Beds
What does a chemical formula tell us about a sentence?
A chemical sentence is an expression indicating the 'beginning' and 'end' products of a chemical process NaOH + HCl => NaCl + H2O + heat Unlike an equation, it is not (necessarily) reversible, so it 'travels' in the direction indicated by the arrow
Compare physical and chemical properties?
A chemical property is the substance's response to other substances, resulting in a new substance. A physical property is something like a substance's lustre, melting point, boiling point, colour, or density, to name a few. Examples of chemical properties are: combustibility and reaction to acid.
What is cholesterol and why is too much of it bad for us?
a loudspeaker changes into sound energy potential energy electrical energy light energy kinetic energy heat energy or chemical energy into same thing up there energy
Can you consider boiling water below 100 degree Celsius on a top of mountain us a chemical property?
No, the boiling of water at any temperature and altitude is a physical property, because water is not changed, it is still H2O.
