A chemical substance is a form of matter having constant chemical composition and characteristic properties. A chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be simple substances, chemical compounds, or alloys. Chemical elements may or may not be included in the definition, depending on expert viewpoint.Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical.
Chemical substances exist as solids, liquids, gases, or plasma, and may change between these phases of matter with changes in temperature or pressure. Chemical substances may be combined or converted to others by means of chemical reactions.
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity). By extension, the word may be metaphorically used to describe toxic effects on larger and more complex groups, such as the family unit or society at large. Sometimes the word is more or less synonymous with poisoning in everyday usage.
A central concept of toxicology is that the effects of a toxicant are dose-dependent; even water can lead to water intoxication when taken in too high a dose, whereas for even a very toxic substance such as snake venom there is a dose below which there is no detectable toxic effect. Considering the limitations of this dose-response concept, a novel Drug Toxicity Index (DTI) has been proposed recently. DTI redefines drug toxicity, identifies hepatotoxic drugs, gives mechanistic insights, predicts clinical outcomes and has potential as a screening tool. Toxicity is species-specific, making cross-species analysis problematic. Newer paradigms and metrics are evolving to bypass animal testing, while maintaining the concept of toxicity endpoints.
List of Pinterest Chemical Toxic images & Chemical Toxic pictures
List of all Pinterest Chemical Toxic images and pictures. Browse Pinterest Chemical Toxic ideas
Grapefruit essential oil's powerful antibacterial, anti-fungal and antimicrobial properties disinfect your home without toxic chemicals. Use the easy household cleaner technique with grapefruit essential oil to kill germs and freshens the air.
Hey there, Happy Monday I am here to give you some much needed information about how to replace the toxic cleaning products in your home. If you’re anything like me, you’re a mom who finds it a struggle to keep a clean house. I would be constantly cleaning; wiping countertops, cleaning bathroo
12 of the Most Toxic Things in your Home and How to Change It! - Nesting With Grace
I decided to finally write a post that I have been wanting to write about the toxic things in our homes. Two women who I met at different occasions and started talking to influenced this post and me! I have learned a lot from them. One is a scientist and one is a breast cancer survivor. I asked them what the most toxic things are in our homes were and what the number one thing was they would change! I shared it all in this blog post.
These thieves essential oil DIY cleaning wipes are perfect for the kitchen, bathroom, and really anywhere! Since they are all natural, you won't have to worry about your family handling toxic chemicals!
Give your laundry that fabric softner fresh scent without the toxic chemicals, using Young Living Essential Oils and basic household ingredients that you know and trust. For more recipes like this visit www.balancedfromtheinsideout.com (essential oils, non toxic cleaning, natural living)
Create non-toxic solutions to support your families health needs. For more Essential Oil Blends visit: www.balancedfromtheinsideout.com (Young Living Oils, Essential Oils, Health living, Chemical Free Home)
Learn how easy it is to make a moisturizing shampoo bars by using pour and melt soap base, shea butter, coconut oil and a few essential oils that nourish your hair. These bars leave your hair feeling so soft and smooth, with no frizz. They're free of toxic chemicals and last quite a while, saving you lots of money. #DIYnatural #DIYproducts #DIYbeauty #DIYshampoo #DIYshampoobars #shampoobars #Pourandmeltsoap #pourandmeltsoaprecipe #nontoxic #chemicalfree #DIY #Homemadeshampoobars #homemadeshampoo
57 Homemade Non-Toxic Cleaning Products | We live in a toxic world and we know it's making us sick. Run down immune systems, skin rashes, chemical sensitivities... just some of the conditions that plague our families. What's a homemaker to do? Make her own, of course! Here are 57 homemade non-toxic cleaners for every aspect of your life and home. | HomeFTW.com
Homemade Non-Toxic Mascara (no aloe vera!) | Want to avoid the chemicals and toxins in commercial makeup? Try this homemade mascara with just 3 ingredients instead! It doesn't contain aloe vera so it stays put longer! |