Answer:
Calcium
Explanation:
Clacium has atomic number 20. The atomic number. This means that it has 20 protons and 20 electrons. it has 21 neutrons.
The state of butter has changed. it only melted, and no new substance is formed or mixed with another substance
<span> A horizon is a surface horizon that largely consists of minerals which holds sand, silt, and clay)and with appreciable amounts of organic matter. This horizon ison top layer of many soils in grasslands and
agricultural lands.</span>
Answer:
Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.
