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Why would you state that sand and dirt is an example of a mixture that is not chemically combined?
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How do you define atomic state?
Some elements that are not chemically combined with any other substance exist as single atoms. Pure copper, pure lead, pure silver. Oxygen does not, the pure state of oxygen is a diatomic molecule, O2.
How are mixtures and compounds different?
Mixture in chemistry terminology refers to a mixture of two or more components (elements, compounds or others) in such a way that there are no specific proportions. Moreover, the constituent components retain their characteristic properties to a greater extent. Mixtures do not have fixed boiling or melting points, rather they boil or melt over temperature ranges. Mixtures can be in the solid, liquid or gas state. Compounds on the other hand are combinations of two or more elements combined in specific proportions e.g. 2 atoms of hydrogen and one of oxygen element combine to form water H2O. In forming a compound, the constituent materials lose their characteristic properties to a greater extent e.g. Hydrogen is combustible, and oxygen helps in combustion whereas water is neither combustible nor helps in combustion. Compounds, if do not have any impurities, melt and boil at fixed temperatures. Compounds also exist in the solid, liquid and gas states.
Why its possible to use physical properties to separate a mixture?
yes
What is the importance of colloids in chemistry?
The importance of colloid is important especially in chemistry industry. It is also known as the 'fourth state of matter' which can be combined with the 3 major state of matters( solid, liquid and gas).
What is the sugar in a mixture of sugar and water?
Firstly, a mixture of sugar and water is known as a solution. A solution is a solute completely dissolved in a solvent. A solute is a compound (can be in any state) which can be dissolved in a solvent(which also can be in any state). The resulting mixture is known as a solution. A solution must be a homogeneous mixture in one phase only. This means that both the solute and solvent must be in the same state. In this example, sugar is in the aqueous state which water is in the liquid state, which makes them essentially in the same phase. Sugar, in this case, is dissolved into water to form sugar water. Hence, sugar is is the solute.
What does chemically combined mean?
Chemically combined refers to the process of something being combined with something else via a chemical reaction. They cannot be physically split up, as they require another chemical reaction to separate them.
What kind of change occurs when a mixture forms?
a mixture remains physically and chemically unchanged-like sand and sugar however,two elements that have the ability to react when 'mixed' physically and chemically change such that one or more compounds are formed . this is not a mixture . conclusion: parts of a mixture do not change.
What planets have oxygen in them?
Almost all the planets have oxygen within them in a chemically combined state {for example: sulphur dioxide, water, etc.}. However, only the Earth has any significant amount of oxygen as a gas, in its atmosphere.
Is a flavoured drink a compound or element or a mixture?
It is a mixture. A element contains only one of the elements from the periodic table and a mixture is something with more then one element but unlike a compound the components are not chemically bonded to one another it can be changed or filtered back to its original state.
How do you define atomic state?
Some elements that are not chemically combined with any other substance exist as single atoms. Pure copper, pure lead, pure silver. Oxygen does not, the pure state of oxygen is a diatomic molecule, O2.
What and a homogeneous mixture?
A homogeneous mixture is of uniform content throughout the entire container. In other words, the 2 parts of the mixture are completely mixed (example: vinegar and water). A heterogeneous mixture will not be completely mixed, and the concentrations are not even throughout the mixture (example: oil and water).
How are mixtures and compounds different?
Mixture in chemistry terminology refers to a mixture of two or more components (elements, compounds or others) in such a way that there are no specific proportions. Moreover, the constituent components retain their characteristic properties to a greater extent. Mixtures do not have fixed boiling or melting points, rather they boil or melt over temperature ranges. Mixtures can be in the solid, liquid or gas state. Compounds on the other hand are combinations of two or more elements combined in specific proportions e.g. 2 atoms of hydrogen and one of oxygen element combine to form water H2O. In forming a compound, the constituent materials lose their characteristic properties to a greater extent e.g. Hydrogen is combustible, and oxygen helps in combustion whereas water is neither combustible nor helps in combustion. Compounds, if do not have any impurities, melt and boil at fixed temperatures. Compounds also exist in the solid, liquid and gas states.
Why its possible to use physical properties to separate a mixture?
yes
Why the eutectic mixture is not a compound?
The elements or compounds that make up a eutectic mixture keep their identities - they are merely mixed together, not combined chemically. They are completely miscible with one another as liquids, but completely immiscible with one another as solids. When a eutectic is solid (below its melting point) it consists of separate crystals or solidified droplets of the pure constituents. In the liquid state, they are merely dissolved in each other, but do not react chemically to form new compounds. It's worth mentioning that in some respects the eutectic (lowest melting) composition does indeed behave much like it's a compound unto its own right, but it's NOT. Again, no chemical reaction involved.
Homogenous mixture can be sparated by physical means?
Heterogeneous Can be separated by physical means because it is a mixture of various things, but Homogeneous cannot be because it is usually chemically bonded
Is Change of state is chemical or physical property?
No, a change of state is not a chemical change, for it can be changed back to its original form and their is no change in the molecular composition of the substance. A chemical change is when it cannot be changed back. The above example is an example of a physical change. Example:- ice when heated changes into water and water when cooled changes into ice.
What is the importance of colloids in chemistry?
The importance of colloid is important especially in chemistry industry. It is also known as the 'fourth state of matter' which can be combined with the 3 major state of matters( solid, liquid and gas).
