Properties of pure substances. Whether element, molecule, or compound, pure substances share similar physical and chemical properties. These predictable properties make pure substances the foundation of chemistry because known interactions can be used to form new materials and new types of matter.
Table of Contents
Can substances share the same physical property?
All samples of a pure substance have the same chemical and physical properties. For example, pure copper is always a reddish-brown solid (a physical property) and always dissolves in dilute nitric acid to produce a blue solution and a brown gas (a chemical property). Physical properties can be extensive or intensive.
Can different elements have the same properties?
Isotopes are atoms of the same element that differ only in the number of neutrons in the nucleus. Since chemical properties are determined by the atom’s electronic configuration and that relates to number of protons, not neutrons, the chemical properties are the same.
Do substances have the same physical properties of the elements that make them up?
1 Answer. Compounds have NEITHER the same chemical properties NOR the same physical properties as their constituent elements.
Why do different substances have different properties?
In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants. The total number of each type of atom is conserved, and thus the mass does not change.
What determines the physical properties of matter?
Intensive physical properties do not depend on the sample’s size or mass. Examples of intensive properties include boiling point, state of matter, and density. Extensive physical properties depend on the amount of matter in the sample. Examples of extensive properties include size, mass, and volume.
What properties do both substances have in common?
Common Properties Both mixtures and pure substances have weight, volume and color while solids also have shape and hardness or texture.
What are some examples of both types of physical properties?
Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter observed.
Is it possible for the two substances be the same molecule?
Two substances with same molecular and empirical formula may or may not be the same compound, because they may have a different structural formula where the atoms are arranged differently as in isomers.
What two elements have similar properties?
Two different elements have similar chemical properties when they have the same number of valence electrons in their outermost energy level. Elements in the same column of the Periodic Table have similar chemical properties. So what does that mean about their valence electrons? You guessed it!
Why do all atoms not have the same properties?
They are not the same at all. Every atom consists of three basic units protons, neutrons, and electrons and these units determine the physical and chemical properties of an atom and matter. But the presence of a different number of these units( protons, neutrons, and electrons) makes an atom unique from the other atom.
Why do elements have similar properties?
The physical and chemical properties of elements depend on the number of valence electrons. Elements present in the same group have the same number of valence electrons. Therefore, elements present in the same group have similar physical and chemical properties.
Do all organic compounds have the same physical properties?
Because they are used in different ways within living organisms, organic molecules often possess widely varying chemical and physical properties. In this lesson, the physical properties of organic compounds will be explored, including examples of how different intermolecular forces can affect these properties.
Do all organic compounds have the same properties?
Organic compounds are compounds based on carbon. They contain carbon and hydrogen, and can also contain other nonmetal elements such as oxygen, nitrogen, or halogen atoms. The properties of organic compounds are very different from the properties of inorganic compounds that you have been using up to this point.
Can two different substances have the same melting point?
It is not uncommon for two different compounds to have coincidentally similar or identical melting points. Therefore, a melting point should be used as simply one piece of data to support the identification of an unknown.
Do all gases have the same properties?
All gases share common physical properties. Like liquids, gases freely flow to fill the container they are in. But while liquids have a defined volume, gases have neither a defined volume nor shape. And unlike liquids and solids, gases are highly compressible.
Why solid liquid and gas have different properties?
Answer: The composition of particles makes each state of matter different. As the solid consists of tightly packed molecules, molecules in the liquid are fairly separated from each other, while molecules in a gas are loosely fitted apart from each other.
What is true about a physical property?
The physical property of a compound is a property that can be observed and measured. A physical property does not affect the chemical composition of the compound. On the other hand, the chemical property is a property of the compound that is associated with the reactivity and the chemical reaction it is involved in.
What do you mean by physical properties?
Definition of physical property : a property (as color, hardness, boiling point) of matter not involving in its manifestation a chemical change.
What are the two physical properties of matter?
Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point. For the elements, color does not vary much from one element to the next. The vast majority of elements are colorless, silver, or gray.
Which groups have the same properties throughout?
- Homogeneous Mixtures:
- The prefix: “homo”- indicates the same.
- Have the same uniform appearance and composition throughout.
What is an example of physical property?
A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
Which of the following is not a physical property of a substance?
Thus, Flammability is not a physical property. It is a chemical change or the one that can be observed when a substance changes into something else. Therefore, the correct answer is option (E).
Is taste a physical property of matter?
Physical properties include odor,taste,appearance,melting point,boiling point etc.. where as chemical properties include the chemical reaction,changes at molecular level.
Is smell a physical property?
Since we smell things without causing any change to the molecular structure of the substance, odor is classified as a physical property. Note that chemical reactions take place in our body so that the receptor can communicate with our brain, but there is no chemical reaction to the molecule of the substance itself.