1. which of the following is scientific theory a) lead is a soft and malleable. b) when sodium burns it emits yellow light c) all matter is composed of small, indestructible particles called atoms. d) oxygen is a gas at room temperature and pressure. e) in a chemical reaction, matter is neither created nor destroyed
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
1. which of the following is scientific theory
a) lead is a soft and malleable.
b) when sodium burns it emits yellow light
c) all matter is composed of small, indestructible particles called atoms.
d) oxygen is a gas at room temperature and pressure.
e) in a
2. a graduated cylinder contains 15.0 ml of water. A solid is added to the water. The volume in the cylinder rises to 21.2 ml. The mass of the solid is 43.77g. What is the density of the solid ( in g/ml)
3. The dose of a medicine is 3.0 mg/kg of the body mass. Calculate the dose in Milligrams for a 134 lb person?
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