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What is Substances composed of 2 or more elements chemically united in a definite proportion by mass?
A compound is a substance composed of two or more elements chemically bonded in a fixed ratio by mass. This means that compounds have a specific chemical formula that indicates the types and proportions of elements present in the compound.
What is the scientific definition of a compound?
A compound is a substance formed when two or more chemical elements are chemically bonded together in a fixed ratio by mass. It has a unique chemical structure and properties different from its constituent elements.
What is a compound in chemistry?
In chemistry, a compound is a substance made up of two or more different elements that are chemically bonded together. These elements combine in fixed ratios to form a unique substance with distinct properties. Examples of compounds include water (H2O) and sodium chloride (NaCl).
When two substances react chemically to produce a new substance what is TRUE of the mass of the two substances compared to the mass of the new substance?
The mass of the two substances before the reaction is equal to the mass of the new substance after the reaction. This is in accordance with the law of conservation of mass, which states that matter can neither be created nor destroyed in a chemical reaction, only rearranged.
What are atoms called which cannot be chemically broken down?
Elements are substances made of identical atoms which cannot be broken down to other substances. Matter is anything that occupies space and has mass.
When two element chemically react the mass of the product is?
After the law of mass conservation the mass of reactants is equal to the mass of products.This is a extremely important law in chemistry.The Russian chemist Mikhail Lomonosov described this principle in 1748.
What is Substances composed of 2 or more elements chemically united in a definite proportion by mass?
A compound is a substance composed of two or more elements chemically bonded in a fixed ratio by mass. This means that compounds have a specific chemical formula that indicates the types and proportions of elements present in the compound.
The tendency of an element to react chemically is closely related to what?
its Atomic Mass.
How would a synthesis reaction cause the mass of a product to be higher than the metal in a crucible?
Heating a metal in a crucible can cause the metal to react with the surrounding gases. thus, when weighing the metal after heating, the mass increases because of the addition of the gaseous elements
When carbon and oxygen combine chemically the mass of product is?
when carbon and oxygen are mixed together it is definitely a chemical change. i know you probably don't want the technical info but here it is: A chemical change happens when something new is created. Like it would be a physical change if you tear a piece of paper in half, because it's still paper, but if you burn a piece of paper then it's no longer paper, it's ash. some signs of a chemical change are smoke, a smell, light, and bubbles.
What is the scientific definition of a compound?
A compound is a substance formed when two or more chemical elements are chemically bonded together in a fixed ratio by mass. It has a unique chemical structure and properties different from its constituent elements.
What is a compound in chemistry?
In chemistry, a compound is a substance made up of two or more different elements that are chemically bonded together. These elements combine in fixed ratios to form a unique substance with distinct properties. Examples of compounds include water (H2O) and sodium chloride (NaCl).
When 1g of metal is oxidized the resulting oxide has a mass of?
wouldn't it be more than 1 g? i say this because the first substance that the oxygen would chemically combine to would have its own mass (1g), and once the oxygen combines to it, wouldn't the mass of the oxygen and the substance also combine, forming a new mass greater than 1 g?
When two substances react chemically to produce a new substance what is TRUE of the mass of the two substances compared to the mass of the new substance?
The mass of the two substances before the reaction is equal to the mass of the new substance after the reaction. This is in accordance with the law of conservation of mass, which states that matter can neither be created nor destroyed in a chemical reaction, only rearranged.
If some of the magnesium chloride solution in the crucible were lost would the loss affect the calculated mass of Mg in the product the calculated mass of O in the product both or neither?
If some of the magnesium chloride solution were lost from the crucible, it would affect the calculated mass of magnesium (Mg) in the product, as there would be less magnesium available to react. The mass of oxygen (O) in the product would remain unaffected because it is not directly dependent on the amount of magnesium chloride lost. Therefore, the loss would impact the calculated mass of Mg but not O.
What is the body of the sun made of?
Chemically, about 75% of the Sun's mass consists of hydrogen, 23,3% - helium. The remainder (1.7%, which nonetheless equals 5,7 mass of Earth) consists of heavier elements, including oxygen, carbon, neon and iron, among others.
Why is atomic mass of many elements not a whole number?
The main reason that the Atomic Mass of elements is not a whole number is due to the presence of different isotopes - these have the same number of protons in the nucleus but a different number of neutrons - so their masses are different even though chemically they are identical. The two isotopes of Chlorine are 35Cl- (75.77%) and 37Cl (24.23%) giving an overall "average" mass of 35.4527.
