Mainly Carbon And Some Other Elements
Atomic number indicates the amount of protons present in the nucleus of an atom.
You can determine if a sample of matter is an element by analyzing its chemical composition. Elements are pure substances made up of only one type of atom. Using techniques like spectroscopy or chemical analysis, you can identify the specific elements present in a sample.
Atomic number indicates the amount of protons present in the nucleus of an atom.
It tells you the elements and the proportions of those elements that are present to make the pure substance.
It tells what elements are present in a molecule and how many atoms of each element are present.
Tell is present tense. I/We/You/They tell He/She/It tells
A chemical Equation is a shorthand form of a chemical reaction. chemists use it to help them tell the substances that are present such as reactants, products, or proportions.Some equations also tell the physical state of a substance.
Burning wood is an irreversible change because it results in the formation of new substances like ash and smoke that cannot be easily reversed back into wood. The chemical structure of the wood is altered during the burning process, making it impossible to return it to its original form.
You can tell the number of colored substances in a drink using a chromatogram by observing the distinct peaks or bands produced on the chromatogram. Each peak or band represents a different colored substance present in the drink. By comparing the retention times of the peaks to known standards, you can identify and quantify the colored substances in the drink.
The group number tells you the number of valence electrons present.
The group number tells you the number of valence electrons present.
When a burning piece of wood undergoes chemical change, it reacts with oxygen in the air to produce new substances such as ash, smoke, and gases. The change is irreversible, and the properties of the wood are altered as it transforms into new compounds. Additionally, heat and light are often produced as a result of the chemical reaction, further indicating a chemical change.