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Which two chemists organized elements based on properties such as how the elements react or whether they are solid or liquid?
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Why is a chemist important to a human being?
Chemists see whether chemicals are harmless, harmful, lethal, or what they are useful for.
What is The first step in finding resources is to identify whether the type of text you are reading is expository or narrative Which statement is NOT true?
Text that is organized around a controlling idea is expository text.Narrative text is a description organized around the experience of an individual or a few characters.Narrative text is commonly found in the form of drama, poetry, and prose, and is only fictionalExpository text usually contains facts or opinions. Obviously these are your choices
What information can astronomers obtain by studying the spectra from stars?
They can obtain information about what elements are in the star; about the star's temperature; about whether the star is moving towards us or away from us; and partial information about the star's rotation.
What crystals are used in solar batteries?
A battery is an energy storage device (among other things). A solar battery is a term that might generally be used to describe an electrical storage battery that uses solar energy to charge it up. In that case, the solar cells, those photovoltaic cells that convert the electromagnetic energy of sunlight into electrical energy, are actually semiconductor crystals. Silicon forms crystals, and if we add things to it, we can give it different properties. Semiconductors are those "solid state" devices made usually of silicon which has some other elements added to it to create the actual semiconductor crystal structure. This crystal structure, whether it is a simple transistor or a hugely complex microprocessor, is manufactured with a set of desired properties in mind. In the case of the solar cell, the semiconductor matrix is made to convert light directly into electricity to charge the battery.
What is the theme of 'Time Enough at Last' in Twilight Zone?
One theme would be the overwhelming sense of isolation that a person would have whether it be at home in a dysfunctional relationship or in that of a blighted world where the person never has a sense of home or well-being because both worlds lack any harmony or harmonious elements .
What is the ''periodic table of elements''?
Scandium.
How do physical and chemical property's change when element becomes a compound or a mixture?
When elements combine to form compounds than the properties of elements are not pre demoninantly the same in them whether chemical or physical while in the form of mixture elements retain their properties.
Why was mendeleev's table so useful?
Because it organized all of the existing elements and helped scientist discover more elements.
Why is a chemist important to a human being?
Chemists see whether chemicals are harmless, harmful, lethal, or what they are useful for.
Why is the periodic table important to scientists?
This is similar to my answer for 'Why is the periodic table important to chemists?'The way that elements are arranged on the Periodic Table gives you some idea of the properties of the elements and how they relate to other elements. Elements in the same group (column) will exhibit some similar chemical and electrical properties, because their outer electron configurations are the same, for example.
What is the propites of the elements?
Different elements all have very different properties. However, you can define an element as a substance with only one type of atom in (e.g. only sulphur atoms). If a substance has more than one type of atom in, then it is either a compound or a mixture, depending on whether the elements have bonded.
What does groups mean in Chemistry?
Is the same thing as a family and a family is a vertical column in the periodic table. Elements in a family all share similar characteristics, whether they be physical or chemical. There are 18 family (or group) columns in the periodic table.
What chemical and physical does ununnovium in the periodic table have?
As of yet, ununnovium is undiscovered. However, if discovered, it would fall in Group 1, which theoretically would give it the same properties as the other alkali metals. These properties include high reactivity, especially with elements in Group 17, and the physical properties of metals, such as conductivity. If ever synthesized, however, ununnovium would be highly unstable and would decay within miliseconds, and it is uncertain whether its properties truly would resemble those of the other Group 1 elements.
What a properties of solution?
Whether or not it's an acid or a base
What is the greatest common factor of 35 in a organized list?
You need at least two numbers to find a GCF, whether their lists are organized or not.
What is The organized efforts of individuals?
The organized efforts of individuals will determine whether or not they are able to complete a task. This can depend wholly on what kind of organizational skills they have.
What DETERMINES properties of a solution?
Whether or not it's an acid or a base
