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True or false mendeleev also grouped elements that has similar properties?
True. Mendeleev organized the elements into the periodic table based on their atomic weight and similar chemical properties. He noticed that elements with similar properties tended to occur at regular intervals, leading to the periodicity of the elements.
When elements combine to form compounds their properties do not change.?
False. Hydrogen and oxygen - both gases - combine to form water - a liquid.
A compound can consist of one element?
False. A compound by definition is a substance made up of two or more different elements chemically bonded together. An element, on the other hand, is a pure substance made up of only one type of atom.
Is an element composed of two or more compounds True or false?
False. A compound consists of 2 or more elements that combine chemically.False. You have that backwards. This might help to remember it - elements are elemental while compounds are compoundedfrom elements.
The first periodic table of elements was created in 1995?
false
True or false The properties of a compound are limited to the individual properties of its constitutive elements?
False. The properties of a compound are not just the sum of its constituent elements, but are instead determined by the way those elements are bonded together in the compound. This can result in unique chemical and physical properties that differ from the individual elements.
When elements combine to form compoundstheir properties are an average of all elements in the compound?
When elements combine to form compounds, the properties of the compound are different from the properties of the individual elements. This is because the atoms in a compound interact with each other in a unique way, leading to the emergence of new properties. The properties of a compound depend on the type of elements present, their arrangement, and the chemical bonds between them.
Is it true of false that the energy of an ionic compound is higher than that of the separate elements that formed it?
I believe that it depends on the elements that you are combining or seperating.
True or false A compounds properties depend on the elements it contains and how they are compare?
We can say that this is true to some extent.We must all agree that the properties of a compound DOES depend on the elements it contains since a variation in the elements changes the properties of the compound.However, what we must remember is that the properties of the compound does NOT depend on the properties of the elements that make up the compound.A simple example is water, made of hydrogen and oxygen. Water is very different from the elements indeed.
Is a compound formed by two positive elements?
No, two positives are repelling, not attracting. No. Compounds are formed by two or more different elements. An ionic compound is formed by the attraction between two oppositely charged ions. Molecular compounds are formed by the sharing of electrons between atoms, which is called a covalent bond.
Is it true or false when a compound is formed by two or more atoms of different elements joining the outer electron shell of the compound is completely filled with electrons.?
true
True or false mendeleev also grouped elements that has similar properties?
True. Mendeleev organized the elements into the periodic table based on their atomic weight and similar chemical properties. He noticed that elements with similar properties tended to occur at regular intervals, leading to the periodicity of the elements.
Do Compounds have properties uniquely different from the elements from which they are made?
false
Did Mendeleev group elements that had similar properties true or false?
It is true.
True or false a compound can only have one element?
false because a compound has to have two elements to become a compound so if it's just one element it's just a element.
Is it true homogeneous mixture of nitrogen gas and oxygen gas will have the same chemical properties as a compound formed from nitrogen gas and oxygen gas?
No; the given statement is false. The natural atmosphere is largely a homogeneous mixture of oxygen and nitrogen gases, and it has very different chemical properties form any of the compounds formed from nitrogen and oxygen. Distinct such compounds with formulas N2O, NO, NO2, and N2O5 are known and are all chemically different from one another as well as from a homogeneous mixture of oxygen and nitrogen gases.
When elements combine to form compounds their properties do not change.?
False. Hydrogen and oxygen - both gases - combine to form water - a liquid.
