compounds
A chemical change can be determined when two substances are combined by observing if there is a color change, formation of a precipitate, evolution of gas, or change in temperature. Additionally, if the chemical properties of the substances change, such as their reactivity or toxicity, it indicates a chemical reaction has taken place.
Yes, a chemical reaction is a process where two or more substances interact and chemically transform into new substances with different properties. This involves the breaking and forming of chemical bonds between atoms.
No, a tossed salad is not an example of a compound. In chemistry, a compound is a substance formed when two or more chemical elements are chemically bonded together. A tossed salad is a mixture of various ingredients like vegetables, fruits, and dressings which are physically mixed together but not chemically bonded.
If you simply mix iron filings and sulfur crystals together, you get a mixture. The iron keeps the properties of iron (including its ability to be magnetized), and the sulfur retains the properties of sulfur. This mixture can be easily separated mechanically by simply passing a magnet nearby, which will magnetize and attract the iron filings. If you combine the two using heat, however, they iron and sulfur will chemically react to form the compound iron sulfide. This compound will have properties different from either the sulfur or iron. A magnet will no long separate the two (although it might attract excess iron that was not combined in the reaction). This experiment is meant to distinguish the properties of substances combined in mixtures versus substances combined as chemical compounds.
A binary mixture consists of two different substances that are physically combined without any chemical reaction taking place between them. Each component retains its unique properties and can be separated through physical means like distillation or filtration. Binary mixtures are commonly found in everyday substances like saltwater or air.
compounds
This is a mixture.
a mixture
A mixture is a combination of two or more substances that are not chemically bonded together. This means that the substances retain their individual properties and can be separated using physical methods such as filtration or evaporation. Examples of mixtures include salt water and air.
A mixture
mixture
Mixture
Are you thinking of covalent bonds? Covalent bonds work to share electrons between two elements so that each may fill their valence shells/orbitals.
Are you thinking of covalent bonds? Covalent bonds work to share electrons between two elements so that each may fill their valence shells/orbitals.
That is called a mixture.
a compound
A mixture is made of two or more substances that are physically combined in the same place but retain their individual properties. Examples include salt dissolved in water or a salad made of lettuce, tomatoes, and dressing.