the best statement of the Law of Conservation of Mass?

Q: what is the mass of an 5.44x10^25 of gold?

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Q: Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous…

A: Element - It is a pure substance made up of only a single atom.  Compound - It is a pure substance…

Q: If a cube of gold has a length of 2.50 cm, what is the mass of the gold sample? which has a density…

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Q: Many processes occur in the digestive system. Which process is best classified as a physical change?…

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Q: Chemistry is the study of _______ and the changes it undergoes.     mixtures     matter     pure…

A: Correct answer : Matter.

Q: A puddle of water slowly shrinks in the sun. After a few hours, the puddle has dried up completely.…

A: The law of conservation of mass, also known as the principle of mass conservation, is a fundamental…

Q: Which of the statements is incorrect? Density is the ratio of the mass of the substance to the…

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Q: Which of the following is not used to separate components in the mixture? Group of answer choices…

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Q: PLS ANSWER THE FOLLOWING QUESTIONS

A: The solution is given below -

Q: Is baking considered a physical change or a chemical change?

A: Baking is a process in which item to be baked is mixed with baking soda and heated in oven. Baking…

Q: Which is an example of a physical change?

A: Physical change can be defined as the change in the physical form of the substance without any…

Q: Cite the evidence that indicates that only physical changes occur when a platinum wire is heated in…

A: Physical change means any kind of change of a substance's form like size, colour etc. without being…

Q: the atoms of elements or molecules of compounds when a chemical change occurs and when a physical…

A: Chemical reaction and chemical change: A chemical reaction bonds between atoms are broken and new…

Q: Penny sizes are the same before and after 1982. What can you say about the density of pennies before…

A: Penny sizes are the same before and after 1982, the density of pennies should have the same before…

Q: Volume of water in gradudated cylinder:33.8 mL Volume of water plus pellets:41.8 mL Volume of…

A: Given Volume of water in gradudated cylinder:33.8 mL Volume of water plus pellets:41.8 mL

Q: 4. Classify each substance by composition, first as mixture (MX) or a pure substance (PS): sugar…

A: Sugar = PS , C                  As it is compound made of carbon , hydrogen and oxygen. Granite =…

Q: Which one of the following is the largest mass? A) 7.6 x 10 mg 8 B) 7.6 × 10'ng C) 7.6 × 10 ²kg D)…

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: Classity each of the properties as a physical property or a chemical property. Drag each item to the…

A: Physical properties: These are the properties that can be measurable. There is no change in the…

Q: 32. Which of the following is a Physical Property of a substance? A) Burning of gasoline B) Cutting…

A: Physical property is measurable. Physical property doesn't change nature of substance. While…

Q: A hollow spherical iron ball has a diameter of 15.3 cm and has a mass of 13.5 kilograms. Assuming…

A: Given: Diameter of the outer sphere = 15.3 cm Mass of sphere = 13.5 Kg = 13500 g…

Q: Name the different methods that can be used for separation of components of a mixture.

A: The different methods that can be used for separation of components of a mixture are to be given.

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.