Examples Of Physical And Chemical Properties
Examples of physical property and chemical property.
Physical property refer to the characteristic of matter that can be observed or measure without changing its composition.Examples are color, odor, phase of matter, freezing point, melting point, viscosity, density, volume, malleability and molecular weight.
Chemical properties of a matter relates as how a substance changes its composition to form another substance.
Examples are flammability, reactivity and oxidation state.
Flammability is the ability of a substance to burn in the presence of oxygen. Example of flammable substances is ethanol. When ethanol and oxygen enters a chemical reaction, it releases energy in the form of heat and light (fire) and as well as a formation of new substances which are carbon dioxide and water.
Ethanol + Oxygen ---> Carbon Dioxide + Water + Fire
Physical properties are properties that do not change the chemical make up of matter. Examples of this would be thins like color, smell, freezing/boiling point, etc. So, if you saw a box, the color of the box would be a physical property.
Chemical properties are properties that do change the chemical make up of matter. Examples of this would be how it reacts with certain substances, flammability, rusting, etc. If the box you saw started burning it would turn to ashes, therefore changing it's chemical nature, and making burning a chemical property.
Physical property describes when the chemical composition of the object goes unchanged the bonds are never broken. For example boiling water would have physical properties since the physical composition is not changing only the phase of the object. Chemical property describes the breaking of the bonds of an object and the chemical composition is completely altered. Burning a piece of paper would have chemical properties since the bonds are being broken and turned into ash.
The stuff of which the universe is composed is Matter.
All matter has two characteristics:
- Occupies space
States of Matter
The distinct forms that different phases of matter take on
- Solid- rigid, has a fixed shape and volume; Example. ICE
- Liquid- has a definite volume and takes the shape of the container; Example. WATER
- Gas- Has no fixed volume or shape; takes the shape and volume of its container; Example. Steam
Types of Changes
- Physical Change
A change that does not change the identity of the substances
2. Chemical Change
A change that causes a substance to become a new substance or broken down into simpler substances
Physical Vs Chemical Properties
Examples of Physical Properties
Examples of Physical properties are:
- Color (vividness of visual appearance)
- Luster (a shine or glow)
- Hardness (rigid and resistant to pressure)
- Odor (distinctive smell)
- Luminescence (emitting light not caused by heat)
- Conductivity (transmission of heat or electricity or sound)
- Solubility (ability to be dissolved)
- Malleability (capable of being shaped or bent)
- Ductility (easily pulled or stretched into a thin wire)
- Density (the measure of the relative "heaviness" of objects with a constant volume)
- Viscosity (resistance to flow - stickiness)
- Compressibility (made more compact)
- Freezing point (temperature below which a liquid turns into a solid)
- Boiling point (temperature at which the vapor pressure is large enough that bubbles form inside the body of the liquid)
- Melting point (temperature at which the solid melts to become a liquid)
- Crystalline structure (geometric pattern e.g. rectangular, hexagonal)
- Allotropic - Allotropes are forms of an element with different physical and chemical properties occurring in two or more crystalline forms in the same physical state. The physical properties can vary widely with the allotropic form. Example: Forms of Carbon are graphite and diamonds. Diamond is highly transparent. Graphite is opaque and black
In a physical change, the substances are not altered chemically, but merely changed to another phase (i.e. gas, liquid, solid) or separated or combined.
Examples of Chemical Properties
Examples of chemical properties are:
- Flammability (the ability to catch on fire)
- Toxicity (the ability to be poisonous)
- Radioactivity (giving off ionizing radiation)
- Heat of combustion (amount of heat released when the substance is completely burned)
- Reactivity with water (what happens when a substance reacts with water)
- Reactivity with acids (what happens when a substance reacts with an acid)
- Oxidation (the combination of a substance with oxygen)
- Corrosion (a corrosive substance that will destroy or irreversibly damage another surface)
In a chemical change, the substances are altered chemically and display different physical and chemical properties after the change.
Physical properties are characteristics of a pure substance that can be observed without changing it into another substance. Examples of physical properties include color, molecular weight and volume.
Chemical properties are characteristics of a pure substance that describes its ability to change into different substance.This property measures the potential for undergoing a chemical change. Examples of chemical properties include reactivity, flammability and oxidation states.