Definitions [7]
Define the term matter. What is it composed of?
- Matter is defined based on its physical and chemical structure. It occupies space and has mass, particularly as opposed to energy.
- Atoms and molecules are the building blocks of matter, consisting of positively charged protons, neutral neutrons, and negatively charged electrons, respectively.
Define the term matter.
The matter is defined as anything that has mass and takes up space. The matter is found in solid, liquid and gas.
Define the following term of Atom .
Atom — An atom is the smallest part of an element that takes place in a chemical reaction.
Define the following term of Matter .
Matter—Anything that has mass and occupies space is called matter.
Define matter.
Anything that has mass and occupies space is called matter.
Define the emulsion. Give one example.
An emulsion is a colloid in which minute droplets of one liquid are dispersed in another liquid which is not miscible with it. Examples are milk and butter.
Chemical properties of matter tell us how a substance changes when it interacts with other substances. These properties describe how matter reacts and forms new substances. When a chemical change happens, the matter changes into something new. The atoms in a substance rearrange themselves, and a new substance is formed. For example:
- When wood burns, it turns into ash and smoke.
- When iron is exposed to air and water, it forms rust.
Examples of Chemical Properties:
- Flammability: This describes if a substance can burn. For example, wood is flammable because it can catch fire.
- Reactivity: This tells us how a substance reacts when mixed with others. For example, if you mix vinegar with baking soda, they react to create bubbles.
- Rusting: Some metals, like iron, will form rust when they come in contact with water and air.
- Acidity and Basicity: Some substances are acidic (like lemon juice), while others are basic (like soap). Acids and bases can react with each other to form new substances.
