We can use the classification of matter to determine how atoms combine in a world full of all kinds of objects. We can find that all of these objects share two properties: mass and inertia. Based on their similar chemical and physical properties, atoms combine to create compounds. The atoms of a compound are combined to form a compound that can then be broken down into its original elements.
All of the things around us are made from matter. Some matter is solid, liquid, or gas, while some are mixed. Some matter has properties of more than one type. For example, sand can be poured as a liquid, while it is made up of many grains of solid sand. Matter can also have different properties when it’s mixed with other matter. For example, clouds appear to be gases, but are actually mixtures of air and water.
All matter contains atoms. Atoms are the smallest parts of an element. Each atom has its unique chemical properties. A silver coin may contain 100 silver atoms while a gold coin only one. Aluminum, a light metal with luster, is another example. Aluminum is one of the most light metals in the world. However, it also has two electrons.
As we can see, matter is made up of elements. Most of these elements combine to form compounds. This is called a pure substance. To create a compound, two elements are combined in a certain ratio. A chemical formula is used to represent the combination. It tells us which elements make up a particular compound and how many atoms each one contains. Carbon dioxide is an example of a compound; its chemical formula is CO2. The number 2 after oxygen indicates the carbon-oxygen ratio of one to two.
An object’s atoms may contain the same element, or a combination of two or more elements. These compounds are bonded together to form larger particles called molecules. Molecules are made up of two or more atoms. The chemical bonds that hold atoms together are what holds them together. For example, water is a water molecule. To make water, an oxygen atom is chemically bound to two hydrogen atoms.
The simplest forces between atoms occur when the electrons are transferred from one atom to another. The number of protons and electrons surrounding the nucleus will determine the type of reactions an atom will experience. Two protons and two electrons make up a helium-atom. A helium atom is an atom that has two protons and eight neutrons. This makes it an alkali.
What is the smallest part of matter? The smallest piece of matter is an atom. It is so small that it cannot be seen using a microscope. The nucleus of a carbon atom has a positively charged nucleus and smaller particles outside. An atom is composed of three basic particles, a positively charged center and a negatively charged centre. The outermost regions are called electron shells.