False. It's Chloride
False. The most abundant negative ion in extracellular fluid is chloride, not calcium. Calcium is usually found as a positively charged ion in extracellular fluid.
False. Hydrogen is the most abundant element in the universe, constituting about 75% of its elemental mass.
False. In an ionic compound, the positive ion (typically a metal) is usually named first, followed by the negative ion (typically a nonmetal).
False. When an atom gains electrons, it becomes negatively charged, not positively charged. This is because electrons are negatively charged particles.
False set occurs when cement appears to set but can still be remixed and flow, while flash set is a rapid and irreversible setting of cement that cannot be reversed. False set can be corrected by adding more water and re-mixing, while flash set requires the cement to be discarded and fresh cement to be used.
False. Electrons have a negative charge, while neutrons are electrically neutral, meaning they have no charge.
False.
False. Elements abundant in the body, such as oxygen, carbon, hydrogen, nitrogen, and calcium, are also abundant on Earth. These elements are essential for life and can be found in various forms in the Earth's rocks, atmosphere, and oceans.
False
False
false
False!! is not usually negative.
Any test can be a false negative.
Promethazine (Phenagren) can cause a false negative.
Helium is more abundant on Jupiter than on Saturn. Jupiter has a higher concentration of helium in its atmosphere compared to other planets in the solar system, including Saturn.
false
False
false