A mixture: 1  can be separated into 2 or more substances by physical or mechanical means. 2  displays the properties of the pure substances making it up. 3  its composition can be varied by changing the proportion of pure substances making it up.  heterogeneous substances, ones with non-uniform composition throughout the sample, are always mixtures.
Injection Site Symptoms. At least half of all people who receive pneumonia shots will experience mild side effects in the area of injection, such as pain or redness. Less commonly, swelling or hardness may also occur in the area. These symptoms can limit movement of the arm or leg where the shot was given.
Symptoms. Pneumonia is not a cold or the flu. Symptoms like fatigue, chest pain, and difficulty breathing can appear without warning, and can be severe. Certain symptoms, like cough and fatigue, may last for weeks, or longer.Roll over the graphic to see some of the many ways pneumococcal pneumonia can affect your body. Roll over the body to see symptoms.ymptoms like fatigue, chest pain, and difficulty breathing can appear without warning, and can be severe. Certain symptoms, like cough and fatigue, may last for weeks, or longer. Roll over the graphic to see some of the many ways pneumococcal pneumonia can affect your body.