Chemical Substance
Hard water is a mixture: water containing calcium and magnesium carbonates, also some sulfates or chlorides.
no! its a pure ELEMENT.. Check out the periodic table
Glass is a mixture, not an element or compound. It is made by melting together a combination of materials such as silica, soda ash, and limestone, which are then cooled to form a hard, transparent material.
Osmium is element 76, one of the "Platinum Group Metals".
cause everything is hard in my class so i need help. my science teacher mr worldrige is retated
Sometimes it is hard to distinguish fact from fiction.
Hard water is a mixture: water containing calcium and magnesium carbonates, also some sulfates or chlorides.
A compound it something that is fused together e.g. copper sulfate and is hard to seperate. A mixture is something more like sand and iron, it's easy to seperate.
no! its a pure ELEMENT.. Check out the periodic table
It's hard to distinguish between the two twins.
No, it is a pure substance.
Glass is a mixture, not an element or compound. It is made by melting together a combination of materials such as silica, soda ash, and limestone, which are then cooled to form a hard, transparent material.
There are many different types of minerals and rocks and they are sometimes hard to distinguish one from another. Apatite rocks are usually transparent green.
Here are some sentences.His hard work will distinguish him from the other employees.How will you distinguish Uncle Paul from the other clowns?
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Osmium is element 76, one of the "Platinum Group Metals".
It was hard to distinguish the twins when they wore the same outfit.