WebMar 24, 2024 · A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. … WebApr 13, 2024 · Abstract. The surface of intertidal estuarine sediments is typically covered with a photosynthetic biofilm. A large fraction of the carbon that is fixed is in the form of exopolymeric substances (EPS), providing the biofilm matrix. The consumption of organic carbon within the sediment column by heterotrophs bacteria is stratified according to the …
Is substance a matter that has a definite composition? Socratic
Webthe smallest unit of matter that maintains its chemical identity the smallest unit of a compound smaller than an electron always made of carbon Question 2 30 seconds Q. A solid substance is answer choices always a crystal regardless of its container always losing particles regardless of its container always frozen regardless of its container WebOct 23, 2024 · Answer: Chemical substance Explanation: But, there are exceptions to this definition; a pure substance can also be defined as a form of matter that has both definite composition and distinct properties. ... In law, "chemical substances" may include both pure substances and mixtures with a defined composition or manufacturing process. … fnaf lefty aooo
Matter Chemistry Quiz - Quizizz
WebPure Substance - A form of matter that has both definite composition and distinct properties. This is broken down into elements and compounds. Element- A pure substance which cannot be broken down into simpler substances by chemical means. Set of stable atoms from which all known molecules are made. WebA pure substance is a type of matter that has fixed chemical composition, whether it is a single element or a compound. ... or simply means the physical form of the matter. 1. Solid. It has a fixed shape and does not conform to a container. The molecules are closely packed or compacted together. ... a pure substance has a definite composition ... WebMatter can exist in one of three main states: solid, liquid, or gas. Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed … green stick on wallpaper