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.
What do all physical properties have in common?
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
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.
How do you identify physical properties?
Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
What is the meaning of physical properties?
Definition of physical property : a property (as color, hardness, boiling point) of matter not involving in its manifestation a chemical 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.
Which elements have similar physical properties?
The answer is b. Elements in the same group have the same number of valence electrons and so interact with other elements in a similar way. They display similar physical and chemical properties. For example, the halogens (F, Cl, Br, I) all react similarly.
Why do groups have similar properties?
Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell. Elements in the same period have different properties because the number of valence electrons in their outermost shells differ.
Do elements in the same period have similar physical properties?
Solution : Elements in the same period have the same outermost shell for different outermost electronic configuration and hence have different physical and chemical properties.
Which is not a physical property?
Color, phase, odor and boiling point are the physical properties. Reactivity with oxygen depends on the chemical nature of object, thus, it is not a physical property.
Which two properties are common to all forms of matter?
Matter can be defined or described as anything that takes up space, and it is composed of miniscule particles called atoms. It must display the two properties of mass and volume.
What are the physical properties of elements?
These properties include color, density, melting point, boiling point, and thermal and electrical conductivity. While some of these properties are due chiefly to the electronic structure of the element, others are more closely related to properties of the nucleus, e.g., mass number.
What’s an example of a 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.
What are the two main physical properties?
There are two types of physical properties: intensive properties and extensive properties. Intensive properties: An intensive property is a bulk property, which means that it is a physical property of a system that is independent of system size or material content.
Is time a physical property?
Einstein’s general theory of relativity established time as a physical thing: it is part of space-time, the gravitational field produced by massive objects. The presence of mass warps space-time, with the result that time passes more slowly close to a massive body such as Earth.
What is a sentence for physical property?
Unfortunately, determining the physical properties of an asteroid be-fore its impact is quite challenging. 6. It had been conceded that the two forms of cocaine were chemically different and had different physical properties.
Which of the following is the best definition of a physical property?
A physical property is a characteristic of matter that can be observed and measured without changing the chemical identity of the sample. The measurement of a physical property can change the arrangement of matter in a sample but not the structure of its molecules.
Is color a physical property?
Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. Properties that describe how a substance changes identity to produce a new substance are chemical properties.
Is state of matter a physical property?
States of matter are examples of physical properties of a substance. Other physical properties include appearance (shiny, dull, smooth, rough), odor, electrical conductivity, thermal conductivity, hardness and density, to name just a few.
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.
Which physical property can be measured?
Other physical properties can be measured such as melting point, boiling point, strength, hardness and magnetism.
What three elements have similar properties to one another?
Answer and Explanation: Elements present in the same group of the periodic table have similar physical and chemical properties. Therefore of all the given triplets, only Sodium, Potassium and Rubidium have similar physical and chemical properties.
Which elements have the most similar properties?
Answer and Explanation: The elements that have the most similar chemical properties are those in the same group, or column of the periodic table. Elements are placed in order of atomic number and end up in vertical groups that have the same number of valence electrons and therefore similar chemical properties.
Which pairs of elements have similar properties?
For example, pairs lithium (Li) and magnesium (Mg), beryllium (Be) and aluminium (Al), boron (B) and silicon (Si), etc are exhibiting similar properties. Boron and Silicon are both semiconductors. Thus Magnesium and Lithium have similar properties.
Why elements in the same family have similar properties?
Because the members of each group in the main group elements has the same number of valence electrons, there are similar properties and similar trends in chemical reactions found in the group.