Define the following: Matter - Atoms - Elements Compounds -

Q: Write all possible chemical formulas for a substance that are consistent with the description…

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Q: Calculate the formula mass for each of the halogen containing compounds to five or more significant…

A: Formula mass is nothing but the total atomic mass of the atoms present in the given formula of a…

Q: Which of the following statements about compounds is TRUE?     A substance that cannot be broken…

A: Which of the following statements about compounds is TRUE? The answer is given below with…

Q: TRUE OR FALSE 1. A heterogeneous mixture can be separated into pure substances, but a homogeneous…

A: Mixture  A mixture is the physical combination of two or more substances in which the identities are…

Q: An element is composed of tiny indivisible, indestructible particles called atoms. All the atoms of…

A: The first postulate of Daltons atomic theory has been modified as atoms further consists of…

Q: Sublimation, Extraction, Decantation, Filtration, Evaporation 2. Can any of the methods listed be…

A: Methods used for the separation of elements from compounds are

Q: Which statement is true about the elements present in a compound?  They maintain their chemical…

A: You are going to deal with electrons.

Q: Which of the following substances always has the same proportion (i.e. a fixed ratio) of its…

A: Proportion can be fixed or be varied in various substances.

Q: Molecules and compounds are made up of many atoms, however, not all molecules are compounds. Which…

A: molecule: substance which have two or more atoms called molecules. compound:- substance which have…

Q: In which of the following are the components NOT chemically combined? O unable to predict O compound…

A: Applying definition of mixture, compound and molecules.

Q: The total mass of the atoms in the letter I above is 1.963X10-21 g. Calculate the mass, in grams, of…

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Q: 19 Which of the following most accurately models the relationship between compounds and elements? A…

A: Given: 19. Models to determine the relationship between elements and compounds.

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: A pure substance is: composed of two or more different types of atoms or molecules that has constant…

A: We know that -  On the basis of physical properties,We can classify matter into several categories .…

Q: Does the type of molecule/element matter or the number of particles matter when we are considering…

A: Given:Type of molecule/element matterThe number of particles matter Determine the type of…

Q: Which of the following statements about compounds and molecules are true?  not all compounds are…

A: When two or more chemical elements combine via chemical bonds, they form a new species called a…

Q: Which elements have molecules as their basic units?(a) helium (b) oxygen(c) iron (d) bromine

A: The elements which have  molecules as their basic units has to be given,

Q: For the molecular compound carbon tetrachloride, what would you multiply "molecules of CCl4" by to…

A: Given : Compound is carbon tetrachloride i.e CCl4. And number of molecules of CCl4 is given. To Find…

Q: Which law states that a compound always contains the same elements in the same proportion by mass?

A: This law was stated by Joseph Proust who was a well-known French chemist.He gave this law as a…

Q: Matter consists of tiny particles that can combine in specific ratios to form substances with…

A: A theory gives us a well-structured explanation of an observed phenomenon that is confirmed through…

Q: When calcium hydroxide and sulfuric acid are combined, calcium sulfate and water are formed is this…

A: A chemical change occurs when the molecular composition is completely altered and a new product is…

Q: A pure titanium bicycle frame contains 1.61 x 10^25 titanium atoms. What is its mass in kilograms?

A: 1 mole of any substance contain 6.022 × 1023 unit of that substance. that substance may be atoms,…

Q: For each of the following pairs of compounds, describe a simple chemical or physical test to…

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Q: Identify the incorrect statement. For a given substance, different mixtures can have different…

A: To solve this problem we have to know about the statement which is incorrect .

Q: How many trunks are found in one mole of elephants? Write your answer in scientific notation such…

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Q: Which of the following can be more completely broken down? a) Petrochemicals b) Metals c)…

A: Among the given options, Petrochemical = does not break completely. Metals = does not break.…

Q: Direction: Complete the table of the substances below by filling out the necessary information that…

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Q: Explain the relationship between molecules and compounds.

A: In chemistry, all the species are comprised of the smallest unit called atom. The atoms combine in…

Q: Which of the following elements is a metal?   phosphorus nitrogen strontium fluorine argon

A: To find: The element that is metal

Q: When a log completely burns in a campfire, the mass of the ash is much less than the mass of the…

A: The law of conservation of mass states that matter cannot be created or destroyed in a chemical…

Q: What are units that comprise a molecular compound?

A: A compound is defined as the chemical substance that is made by the combination of two or more than…

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 10.810.8 grams. Tia…

A: Number of atoms = number of moles x 6.0224 x 1023 Number of moles = Mass/molar mass

Q: Part 1: Vocabulary Define the following terms: (from what you remember from middle school) Matter:…

A: Answer for part 1 Matter It is the substance of which any physical object consist. Atom It is the…

Q: Write down the names and symbols of all the elements that are metals

A: There are 92 metals in the periodic table.

Q: During her presentation, Zahara was asked several questions from the audience and to provide the…

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Q: You have two distinct gaseous compounds made from element X and element Y.The mass percents are as…

A: To find: The simplest possible formulas for reactants and products in the given chemical equation.…

Q: Which describes a property of all elements? O All elements exist in nature in the solid phase. O All…

A: In this question some statements about elements are given  We need to identify the statement which…

Q: The mass of an average neon atom is 20.2 atomic mass units. One atomic mass unit is equal to…

A: The term atomic mass unit can be defined as the unit of mass which is used to express the atomic or…

Q: Give an example of a binary diatomic formula unit, triatomic molecule of a compound, and triatomic…

A: Atomicity :- The number of atoms present in a molecule is called atomicity . For example :-  H2 is…

Q: Are the physical properties of a substance, such as color, sufficient to identify the substance? Why…

A: Physical property: It is a property of a compound that can be observed or measured without changing…

Q: Study the following formulas: SO2, C2H40, CaCO3, C3H60, C12. Identify the formula of the substance…

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Q: Part A In the following images, the white spheres represent hydrogen atoms and the red spheres…

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.