1. The act, process, or result of altering or modifying: a change in facial expression. 2. The replacing of one thing for another; substitution: a change of atmosphere; a change of ownership. 3. A transformation or transition from one state, condition, or phase to another: the change of...
The meaning of MANIPULATE is to treat or operate with or as if with the hands or by mechanical means especially in a skillful manner. How to use manipulate in a sentence.
In other words, chemists try to understand the unchangeable properties of matter and also why and how some of the characteristics of matter change. Everything that can be seen, heard, or smelled involves chemistry. Cooking dinner, washing clothes, experiencing the effects of caffeine, and making...
What is reduction in chemistry electrons? Reduction is the gain of electrons, loss of oxygen, or gain of hydrogen. Often we can explain it in terms of change in oxygen content or hydrogen content but sometimes an explanation in terms of electrons is required.Reduction...
The meaning of BIOCHEMISTRY is chemistry that deals with the chemical compounds and processes occurring in organisms. How to use biochemistry in a sentence.
Some care must be taken in forming judgments, because an element's properties can change under different conditions. Hydrogen, for example, is a non-metal under normal conditions on Earth. In Jupiter's interior, however, under enormous pressure, hydrogen becomes a liquid metal. ...
The sign of the entropy change is positive as predicted by the second law of thermodynamics for an irreversible process in an isolated system.What Is Entropy in Chemistry? Entropy is a measurement of the number of microstates available to a system. Another way to state the definition is the ...
Change in Enthalpy Enthalpy, denoted by the symbol H, is a thermodynamic property that represents the total energy content of a system. It encompasses both the internal energy (U) of the system and the product of its pressure (P) and volume (V). The relationship between internal energy, pr...
A chemical change, also known as a chemical reaction, is a process in which one or more substances are altered into one or more new and different substances. In other words, a chemical change is a chemical reaction involving the rearrangement of atoms. While a physical change can often be ...
Mixtures:Mixing together materials where one is not soluble in the other is a physical change. Note the properties of a mixture may be different from its components. For example, if you mix together sand and water, you can pack the sand into a shape. Yet, you can separate the components ...