A chemical reaction
excretion
Hydrochloric acid reacts with sodium hydroxide to produce table salt and water. HCl + NaOH -->H2O + NaCl
You can observe physical, chemical, and characteristic properties of a substance and can be used to determine the usefulness of a substance by, giving us information about the substance usually using our 5 senses which are physical properties. Or being able to describe the substances ability to undergo changes to its composition to produce one or more new substances, chemical property. Or even just being able to identify whether or not the substance is pure or not can help us determine if the substance is hazardous or not. two other properties I did not mention were the qualitative and the quantitative properties.
Substances used in making nylon fibers come from petroleum based chemicals or petrochemicals. Different chemical compounds are used to produce different fibers.
Elements can be combined in several different ways. Elements which undergo no chemical reactions when combined are called mixtures. Normally, the elements in a mixture retain their original properties, but metals can be combined into mixtures called alloys to produced new properties, though these properties tend to be the intermediate sum of the collective properties of the metals involved. Elements which combine chemically to produce entirely new substances are called chemical compounds.
excretion
Yes is it a chemical change as the process is irreversible. Also its properties are being changed and it looks different physically which always means a chemical change has occurred or will occur if certain substances are put together.
Hydrochloric acid reacts with sodium hydroxide to produce table salt and water. HCl + NaOH -->H2O + NaCl
A chemical reaction is a process that rearranges the atoms of one or more substances to produce new substances
Different substances produce different amounts of friction. But generally, rough surfaces produce the maximum friction.
activation energy
Many different chemicals burn and produce flames, but different chemicals have different chemical properties, and produce different amounts of energy when they burn. Those which produce more energy, will also produce hotter flames.
You can observe physical, chemical, and characteristic properties of a substance and can be used to determine the usefulness of a substance by, giving us information about the substance usually using our 5 senses which are physical properties. Or being able to describe the substances ability to undergo changes to its composition to produce one or more new substances, chemical property. Or even just being able to identify whether or not the substance is pure or not can help us determine if the substance is hazardous or not. two other properties I did not mention were the qualitative and the quantitative properties.
Substances used in making nylon fibers come from petroleum based chemicals or petrochemicals. Different chemical compounds are used to produce different fibers.
Elements can be combined in several different ways. Elements which undergo no chemical reactions when combined are called mixtures. Normally, the elements in a mixture retain their original properties, but metals can be combined into mixtures called alloys to produced new properties, though these properties tend to be the intermediate sum of the collective properties of the metals involved. Elements which combine chemically to produce entirely new substances are called chemical compounds.
Either through the process of mitosis or meiosis.
These substances are called products in English.