What is a substance that carries electricity under certain circumstances but not under other circumstances?
Become a Study.com member to unlock this answer! A substance that will conduct electricity only under certain conditions is called a semiconductor.
What is a type of element whose physical properties are generally opposite to those of metals?
In general, the physical properties of nonmetals are the opposite of those of the metals. Solid nonmetals are dull, meaning not shiny, and brit- tle, meaning not malleable or ductile.
What group 15 element is used to make compounds known as fertilizers?
T or F: The Group 15 element oxygen is used to make compounds known as fertilizers.
What elements have the same chemical 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.
Which elements have properties of both metals and nonmetals?
The elements boron, silicon, germanium, arsenic, antimony, and tellurium separate the metals from the nonmetals in the periodic table. These elements, called metalloids or sometimes semimetals, exhibit properties characteristic of both metals and nonmetals.
What properties present in non-metals?
Properties of Nonmetals
Nonmetals have high ionization energies and electronegativities. They are generally poor conductors of heat and electricity. Solid nonmetals are generally brittle, with little or no metallic luster. Most nonmetals have the ability to gain electrons easily.
What has the same chemical properties but different physical properties?
Isotopes have similar chemical properties because they have same number of valence electrons and have different physical properties, such as boiling point, melting point etc., because they have different mass numbers.
Which has the same chemical properties and different physical properties?
Explanation: The existence of an element in more than one form, having the same chemical properties but different physical properties is called allotropy.
Why do elements have similar chemical properties?
Each element within a group has similar physical or chemical properties because of its atom’s outermost electron shell (most chemical properties are dominated by the orbital location of the outermost electron).
What is chemical property matter?
Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. … Flammability is the ability of matter to burn.
What are some examples of chemical properties of matter?
Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion. Iron, for example, combines with oxygen in the presence of water to form rust; chromium does not oxidize (Figure 2).
Why do elements in the same group have similar physical and chemical properties?
A vertical column in the periodic table of elements is called group. … So, we can say that elements in a group have the same physical and chemical properties because their atoms have the same number of valence electrons or same valence shell electronic configuration.
What determines the chemical properties of elements?
An element can be identified by its atomic number, or the number of protons located in its nucleus. … Valence electrons determine the chemical properties of an element, or how the valence electrons of one element are shared or traded with valence electrons of other elements to create new molecules.
How do you identify chemical properties?
The chemical properties of a substance can be determined by performing experiments that use specific materials or processes with known characteristics. If a material affects the substance in a given way, the substance has a particular property. If a process changes the substance, more properties can be deduced.
What is the matter that can be a compound or element and has a chemical property?
substance
Elements and Compounds
Any sample of matter that has the same physical and chemical properties throughout the sample is called a substance. There are two types of substances.
Why different atoms have different chemical properties?
The difference in the number of protons and neutrons in atoms account for many of the different properties of elements. … The number and arrangement of electrons in an atom define the chemical characteristics of elements. One way to think of electrons is that they are the part of the atom that “shows”.
Which characteristic is not a chemical property?
Melting point is not a chemical property.
What does chemical property mean in science?
Definition of chemical property
: a property of a substance relating to its chemical reactivity (as the explosive property of nitroglycerin)
How do the chemical properties of a substance affect its use?
A chemical property is any of a material’s properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance’s chemical identity. … They can also be useful to identify an unknown substance or to separate or purify it from other substances.
Which of the following properties is a chemical property or change?
The change of one type of matter into another type (or the inability to change) is a chemical property. Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.
Which of the following is not a property of chemical change?
Explanation: BECAUSE AFTER CHEMICAL CHANGE OBJECT DOES NOT COME IN ITS ORIGINAL STATE THEREFORE REVERSIBILITY IS NOT CHARACTERISTIC OF CHEMICAL CHANGE .
What are properties of elements?
All elements have properties. Those properties include, but are not limited to, conductivity, magnetism, melting point, boiling point, color, state of matter, and others. Elements with similar properties are grouped together in different areas of the periodic table of elements.