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What must someone know in order to classify it as a pure substance?
Wiki User
∙ 12y ago
A pure substance is a substance that consists solely of the same atoms/molecules.
So a volume of water that contains only H2O is a pure substance. A block of iron that contains only Fe atoms is pure substance. A pure substance can be composed of atoms or molecules as I said before BUT they have to be exactly the same.
A substance that has constant chemical composition and characteristics
Wiki User
∙ 10y ago
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What measurements must be known in order to find the density of a substance?
To find the density of a substance, you need to know its mass and its volume. The mass is usually measured in grams or kilograms, while the volume can be measured in cubic centimeters or milliliters for solid objects, or in liters for liquids. By dividing the mass by the volume, you can calculate the density of the substance.
Why is it diffifult to make a list of simple rules that will let you classify a chemical and phyiscal change?
It is not that difficult if you know the difference between a chemical and physical change. A physical change is reversible and a chemical change is not. In a physical change a new substance is not formed. The breaking of glass is not reversible and is physical.
What is the Difference between a dilute substance and a concentrated substance?
i don't know really so sorry
What is the Density of Water with volume of 18 Cm?
Assuming standard (pure, clean) water, and standard temperature and pressure,the density of any amount of water is always 1.In order to find the density of a substance, you don't need to know mass or volume.You only need to know what the substance is. That's the whole point of 'density'.
How do you classify compounds as soluble or insoluble following the rules for sloubility?
The following rules need to be know to know the correct answer. It is important to include what the following answer choices are.
What are the two characteristics of an air mass that you need to know in order to classify. It?
Moisture and Temperature
How do you know that radium was a magical substance?
Because it can harm someone.
If you have an no contact order can you work with that person?
i have a pertction order on someone and i want to know if i can contact him?
How can you test a substance to see if it is an acid or a base through pH meter?
I don't know, ask someone else
Can you classify real numbers?
Grrr i need help to know what does it mean to classify a real number and how you do it i have hw due tommorow
How do you know when to classify whether you and your something are talking or not?
What do you mean by that something?
What are some classify concave lenes?
i don't know that is why am asking you
How do you convert ml per l to mg per l?
In order to do that, you have to know how many mg are in each ml, and that's different for every substance. It's called the 'density' of the substance.
What you know about substance?
Quite a lot - depending on the specific substance you are talking about. What do you want to know?
Why do you need to classify animals plants and other things?
Because there are sometimes multiple meanings for words such as mole (face, animal) and you need to know which is which so they classify it.
Why is it important to classify things?
Classifying things helps to organize information, identify patterns, and make sense of the world around us. It aids in communication, decision-making, and problem-solving by creating order and structure. Classification also allows for easier retrieval and comparison of information.
What two things must you know about density?
In order to calculate the density of a substance, you must know the volume and the weight of a sample. Then the density is calculated as Density = (Weight) divided by (Volume).
