Beach sand, air with clouds, oil and vinegar, granite and pizza are five examples of heterogeneous mixtures. This is because they all have components that stay separated when put together.Know More
A mixture is generally defined as at least two or more substances that mix together but do not become physically bonded. They are able to be compatible with each other while not fusing together. A mixture generally occurs when two things are added into one location and are agitated to mix together. A mixture must also be able to be separated without the use of other chemicals to be considered a true mixture.
A heterogeneous mixture is essentially a mixture that does not become one substance when mixed together. All parts of the solution stay separate, and properties of each solution do not cross boundaries at all. Most mixtures, both heterogeneous and homogeneous, vary differently from each other whether there is an equal ratio or not. Heterogeneous mixtures tend to vary more than homogeneous ones.
Homogeneous mixtures differ from heterogeneous ones because they are more uniform throughout. They generally mix evenly and do not separate from each other the way that heterogeneous ones do. The human eye is generally not able to tell the difference between the substances that are in a homogeneous mixture.Learn More
Sugar dissolves in water because both substances are polar substances. Water dissolves the majority of substances that are polar or ionic. The fact that sugar dissolves in water is unusual because most molecular compounds are nonpolar and are not water-soluble.Full Answer >
Ionic compounds dissolve in water because the hydrogen and oxygen atoms in the H2O molecules have partial charges that attract the ions in the solid compound, causing it to dissociate into separated ions. Differences in electronegativity account for the partial positive charge carried by water's hydrogen atoms and the partial negative charge of its oxygen atoms. What is happening to the ionic compound when it dissolves is a separation of its ions from their preexisting solid crystal lattice structure into unattached ions that are free to move about in the solution.Full Answer >
Elemental iodine is soluble in water, but only slightly. One gram of iodine dissolves in 3,450 milliliters at 20 degrees Celsius. To increase solubility, potassium iodide can be added, as well as nonpolar solvents, such as carbon tetrachloride and hexane.Full Answer >
Acidic solutions turn litmus paper red, turn a universal indicator red or yellow, taste tart or sour, conduct electricity, react with metals, and neutralize bases. When an acid and a metal react, hydrogen is released; when an acid and a base react, an ionic compound called a salt is formed.Full Answer >