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What else can I help you with?
Is gravel a pure substance or a mixture?
Geavel is not pure, it is an undescriptable mixture of unknown composition
What is meant by a mixed melting-point determination?
"Mixed melting point determination" is a term used in chemistry. Organic substances have a fixed temperature at which they liquify. If a chemist wants to determine the nature of an unknown substance, he can determine it by these means. If the unknown substance does not melt at the usual temperature, it can be said to be impure. If the chemist has two unknown substances and wants to determine what they are, he may mix equal parts of each and start the liquification process. If the combination melts at the usual temperature, the chemist can say that both are the same. If the chemist wants to determine the nature of an unknown substance, he may mix a fixed amount of a known substance with a fixed amount of an unknown substance, it can be estimated, what the unknown substance is.
Contained in the chart to determine which unknown substance could be lithium?
Look for a substance that is soft, silver-white, and reacts vigorously with water. These characteristics are indicative of lithium. Additionally, check for any specific gravity or density values that align with lithium's properties.
Why cant a mixture have a unique chemical formula?
Because in a mixture, there are no bonds formed between the elements, and therefore the proportions of each element are unknown, for the mixture as a whole. A mixture is not a chemical change.
What is the significance of the KCl flame test in identifying unknown substances?
The KCl flame test is significant in identifying unknown substances because it helps determine the presence of specific metal ions based on the color of the flame produced when the substance is burned. This test is commonly used in chemistry to distinguish between different elements and compounds, providing valuable information about the composition of the unknown substance.
Is gravel a pure substance or a mixture?
Geavel is not pure, it is an undescriptable mixture of unknown composition
Why can you write a formula for compounds but not for a mixture?
Because in a mixture, there are no bonds formed between the elements, and therefore the proportions of each element are unknown, for the mixture as a whole. A mixture is not a chemical change.
What is meant by a mixed melting-point determination?
"Mixed melting point determination" is a term used in chemistry. Organic substances have a fixed temperature at which they liquify. If a chemist wants to determine the nature of an unknown substance, he can determine it by these means. If the unknown substance does not melt at the usual temperature, it can be said to be impure. If the chemist has two unknown substances and wants to determine what they are, he may mix equal parts of each and start the liquification process. If the combination melts at the usual temperature, the chemist can say that both are the same. If the chemist wants to determine the nature of an unknown substance, he may mix a fixed amount of a known substance with a fixed amount of an unknown substance, it can be estimated, what the unknown substance is.
Why is mixture not a substance?
A mixture is not a substance because it is made up of two or more different substances that are physically combined together but can be separated by physical means, such as filtering or evaporation. Substances, on the other hand, are pure and cannot be separated by physical means.
How is an unknown oxidation state of an element within a compoud determined?
In a compound the sum of oxidation states of the elements contained is zero.E1 + E2 + ... = 0If you know the oxidation states of the elements E1... you can calculate the oxidation state of the element E2.
Who was buried in the tomb of the unknown soldier?
In most countries, the tomb of the unknown soldier is exactly that. The remains of an unknown and unidentified are contained in it.
Why you can separate a mixture without any change in the identity of the substances?
Why a mixture can be seperated without any changes in the identity of the substance is unknown publicly. However, it is known that the seperation of these substances usually involve the process of mechanical filtering or decanting.
Which describes mendeleevs use of the term ekaaluminum?
A mixture of aluminum and an unknown element.
Contained in the chart to determine which unknown substance could be lithium?
Look for a substance that is soft, silver-white, and reacts vigorously with water. These characteristics are indicative of lithium. Additionally, check for any specific gravity or density values that align with lithium's properties.
Why cant a mixture have a unique chemical formula?
Because in a mixture, there are no bonds formed between the elements, and therefore the proportions of each element are unknown, for the mixture as a whole. A mixture is not a chemical change.
Is tap water an element or a compound or mixture?
I have a better answer: the definition for a compound is a substance that contains two or more elements chemically combined in a fixed proportion. Water is made up of two elements called hydrogen and oxygen. Therefore it's a compound not a mixture. ______ tap water has other impurities within it - such as microscopic particles unknown to our eyes. so therefore it is a homogeneous mixture - not a compound.
Is iron sulphide a compound or a mixture?
unknown
