Admin Table of Contents
- 1 When elements are arranged in increasing atomic certain chemical and physical properties repeat periodically?
- 2 When elements are arranged by atomic number their chemical and physical properties show a periodic pattern is known as?
- 3 What are the physical and chemical properties of the elements in the periodic table?
- 4 Is an arrangement of the elements by increasing atomic number and by changes in physical and chemical properties?
- 5 How can you tell if there has been a chemical change and how chemical changes affect matter?
- 6 Why chemical and physical properties show variations across a period?
When elements are arranged in increasing atomic certain chemical and physical properties repeat periodically?
In 1869, Dmitri Mendeleev and Lothar Meyer individually came up with their own periodic law “when the elements are arranged in order of increasing atomic mass, certain sets of properties recur periodically.” Meyer based his laws on the atomic volume (the atomic mass of an element divided by the density of its solid …
When elements are arranged by atomic number their chemical and physical properties show a periodic pattern is known as?
A pattern of repeating order is called periodicity. In the mid-1800s, Dmitri Mendeleev, a Russian chemist, noticed a repeating pattern of chemical properties in elements. Mendeleev arranged the elements in order of increasing atomic mass, to form something that resembles the modern periodic table.
How do the physical and chemical properties of the elements change periodically?
The elements and their compounds can be classified according to their chemical and physical characteristics. This observation is known as the Periodic Law, which states that “Similar physical and chemical properties recur periodically when the elements are listed in order of increasing atomic number”1.
What are the physical and chemical properties of the elements in the periodic table?
We learned that physical properties are things like shininess, conduction of heat or electricity, melting point, and density. Chemical properties include things like reactivity to oxygen, flammability, and ability to hold on to electrons during a chemical reaction.
Is an arrangement of the elements by increasing atomic number and by changes in physical and chemical properties?
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
When elements are arranged by atomic number their properties repeat at regular intervals?
Chemistry Ch. 6
| Question | Answer |
|---|---|
| Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing… A. Atomic number B. Density C. Reactivity D. Atomic Mass | D. Atomic mass |
How can you tell if there has been a chemical change and how chemical changes affect matter?
The formation of gas bubbles is often the result of a chemical change (except in the case of boiling, which is a physical change). A chemical change might also result in the formation of a precipitate, such as the appearance of a cloudy material when dissolved substances are mixed.
Why chemical and physical properties show variations across a period?
Many of the changes in physical properties as you cross a period are due to the nature of the bonding interactions that the elements undergo. The elements on the left side of a period tend to form more ionic bonds, while those on the right side form more covalent bonds.