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What is the SG of water?
The specific gravity (SG) of water is a dimensionless quantity that is defined as the ratio of the density of water to the density of a reference substance, typically water itself at 4°C, where it has its maximum density of approximately 1,000 kg/m³. Therefore, the specific gravity of water is 1.0. This means that water has the same density as itself, which serves as the baseline for comparing the densities of other substances.
What is Definite Chemical Makeup?
Definite chemical makeup refers to the specific composition of a substance, characterized by a consistent ratio of elements and compounds that define its identity. This concept is fundamental in chemistry, as it distinguishes pure substances from mixtures. For example, water (H₂O) always consists of two hydrogen atoms and one oxygen atom, maintaining the same chemical properties regardless of its source. Understanding a substance's definite chemical makeup is crucial for predicting its behavior and interactions in chemical reactions.
Is Talc an element?
No, talcom is not an element. To be an element, a substance must have all the same type of atom. Once it has this, it can go on the Periodic Table. So, as talcom has many different types of atom in it, it's not an element.
What is liquid hydrogen made of?
Hydrogen. Just like liquid steam is made of water molecules - the same stuff but in a different form.
What is the similarities between water vapour and steam?
Both are same.
Why can't we use the same substance to make everything?
Water is a substance!!!! So how could you make houses with water. How could you make clothes with water. We need different substances for different things. !!!!!
If two unidentified solids of the same texture and color have different solubilities in 100g of water at 20C you could conclude that they are what substances?
The two unidentified solids are likely different substances because they have different solubilities in water at the same temperature. Solubility is a characteristic property of a substance that depends on its chemical composition. If two substances have different solubilities, they are likely made up of different molecules or ions.
Is milk to coffee as water is to ice?
No. Ice and water are the same substance (they're both water); the only difference is the state of matter the two are in. Milk and coffee are different substances and they're in the same state of matter.
What are two of the same substances that have the same mass but different volumes?
First of all, there's no such thing as the mass of a substance, or the volume of a substance. You can have 0.01 kilogram of water or 10,000 kilograms of water. It only depends on how much you decide to scoop out of the bucket. The water itself has no characteristic mass. Similarly, you can have 1 milliliter or 1 cubic kilometer of potato salad. It only depends on how much you buy at the deli. The potato salad itself has no characteristic volume. If you measure out the same mass of two different substances, then the sample of the substance with the greater density will have less volume. If you measure out the same volume of two different substances, then the sample of the substance with the greater density will have more mass.
Can the melting and freezing point of a substance be the same?
For water and some other substances, the answer is 'Yes'.
Is water to water an example of whesion or adhesion?
Water to water is an example of cohesion, which refers to the attraction between molecules of the same substance. Adhesion, on the other hand, is the attraction between molecules of different substances.
Do other substances freeze at the same temperature as water?
Different substances freeze at different temperatures. The freezing point of a substance depends on its chemical composition and structure. Water, for example, freezes at 0 degrees Celsius (32 degrees Fahrenheit), but substances like mercury freeze at -39 degrees Celsius (-38 degrees Fahrenheit).
Why same amount of heat supplied to same amount of different substances does not produce the same increase in temperature?
There is a formula in physics ΔQ=m*c*ΔT, where m is the mass of the substance you are heating, ΔQ is the heat you supply to the substance, c is the specific heat which has a different value for different substances and ΔT is the change in temperature. If your substances are different and they have the same mass then by supplying the same amount of heat the change in temperature will be different.
Why is it that two different substances that have the same masses can have differen weights?
Two different substances that have the same mass will also have the same weight if they are in the same location. Weight is the force of gravity acting on the mass of a body (or substance). The force of gravity decreases the further you are from the center of the earth, so it is possible for two substances with the same mass to have different weights if they are at different distances from the center of the earth.
Whats the difference between adhesion and cohesion?
Adhesion is the attraction between two molecules of different substances.cohesion is the attraction between molecules of the same substances.
Is a substance the same as an ingredient?
A substance can be an ingredient, but not all substances are ingredients.
Is dirt a heterogeneous or homogeneous substance?
Heterogeneous because it contains many different substances and is not always the same in composition.
