Are compounds made up of 2 or more elements?
Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.
What are made up of 2 or more elements or compounds that haven’t been chemically combined together?
A compound contains two or more elements chemically joined together. A mixture contains two or more different substances that are not chemically joined together. The different substances in a mixture can be elements and/or compounds.
What’s a compound composed of two elements called?
Bonding Unit Vocabulary
|binary compound||a compound composed of two elements; NaCl and Al2O3 are binary compounds|
|chemical formula||an expression that indicates the number and type of atoms present in the smallest representative unit of a substance|
What are compounds made of?
A compound is a substance that consists of two or more elements in a unique composition. The smallest particle of a compound is called a molecule. Chemical bonds hold together the atoms of molecules. Compounds can form only in chemical reactions, and they can break down only in other chemical reactions.
What are the 2 main types of chemical compounds?
The substances mentioned above exemplify the two basic types of chemical compounds: molecular (covalent) and ionic.
What are 5 examples of mixtures?
Here are a few more examples:
- Smoke and fog (Smog)
- Dirt and water (Mud)
- Sand, water and gravel (Cement)
- Water and salt (Sea water)
- Potassium nitrate, sulfur, and carbon (Gunpowder)
- Oxygen and water (Sea foam)
- Petroleum, hydrocarbons, and fuel additives (Gasoline)