Chapter 10 Assessment Chemistry? All Answers

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Chemistry | Grade 10 | Chapter 10 | Self Assessment 10.1

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How do you find representative particles?

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Measure the mass of the substance in grams. For example, you weigh a sample of water and its mass is 36.0 grams. Calculate the molar mass of the substance. Add the average atomic masses of the individual atoms in the chemical formula, as per the periodic table.

How do you identify the representative particle?

It is an experimentally determined number. A representative particle is the smallest unit in which a substance naturally exists. For the majority of elements, the representative particle is the atom. Iron, carbon, and helium consist of iron atoms, carbon atoms, and helium atoms, respectively.

What are the 4 representative particles?

The types of representative particles that chemists generally work with are:
  • atoms – the smallest particle of an element.
  • ions – atoms with positive or negative charges.
  • molecules – two or more covalently bonded atoms.
  • formula units – the simplest ratio of ions that make up an ionic compound.
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How many representative particles are in 18.0 H2O?

(2) 18.0 moles of water molecules will have = 18.0×6.022×1023=1.08×1025 18.0 × 6.022 × 10 23 = 1.08 × 10 25 water molecules.

What is the representative particle for fluorine?

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Example Symbol Representative Particle
potassium K Atoms
magnesium chloride MgCl2 Formula unit
diphosphorous pentoxide P2O5 Molecules
fluorine* F2 Molecules

How do you find the representative particle?

It is an experimentally determined number. A representative particle is the smallest unit in which a substance naturally exists. For the majority of elements, the representative particle is the atom. Iron, carbon, and helium consist of iron atoms, carbon atoms, and helium atoms, respectively.

What are the 4 representative particles?

The types of representative particles that chemists generally work with are:
  • atoms – the smallest particle of an element.
  • ions – atoms with positive or negative charges.
  • molecules – two or more covalently bonded atoms.
  • formula units – the simplest ratio of ions that make up an ionic compound.

What is the representative particle of ionic?

Representative Particle: The smallest part of a substance that retains the properties of the substance. For a molecular compound (H2O), a representative particle is a molecule. For an ionic compound (Na2SO4), a representative particle is a formula unit.

What are the representative particles called?

representative particle is called a molecule. A molecule is the smallest unit quantity of a compound which can exist by itself and retain ALL the properties of the original substance.

Is a molecule a representative particle?

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A molecule is a representative particle of diatomic element. representative particle of covalent compound. A formula unit is a representative particle of ionic compound. The mass of even the largest atom is incredibly small.

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What are the 4 types of representative particles?

The types of representative particles that chemists generally work with are:
  • atoms – the smallest particle of an element.
  • ions – atoms with positive or negative charges.
  • molecules – two or more covalently bonded atoms.
  • formula units – the simplest ratio of ions that make up an ionic compound.

What is a representative particle?

A representative particle is the smallest unit in which a substance naturally exists. For the majority of elements, the representative particle is the atom.

Is an electron a representative particle?

A representative particle is any particle that can’t be broken down into any smaller particles without changing what it is. For example, atoms are representative particles because breaking them down into their components changes the atom. Other representative particles are electrons, ions and formula units.

Is an molecule a particle?

The smallest particle of a substance that has all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.

How do you express relative amounts of each element in a compound?

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How do you express relative amounts of each element in a compound? Relative amounts are expressed by the percent composition or the percent by mass. as many as there are different elements in the compound.

How do you find the amount of one element in a compound?

To calculate the mass percent of an element in a compound, we divide the mass of the element in 1 mole of the compound by the compound’s molar mass and multiply the result by 100.

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How do you find the amount of an element?

Determine the number of atoms of each element in the molecule. Obtain the atomic masses of each element from the periodic table and multiply the atomic mass of each element by the number of atoms of that element.

What shows the elements present in a compound and their relative proportions?

A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements.

How do you find the percent composition of a compound?

Percent Composition
  1. Find the molar mass of all the elements in the compound in grams per mole.
  2. Find the molecular mass of the entire compound.
  3. Divide the component’s molar mass by the entire molecular mass.
  4. You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.

References:

Chemistry Chapter 10 Assessment – Chapter 10 Assessment…

Chemistry Chapter 10 Assessment Flashcards | Quizlet

10th Chemistry Chapter 10 Online Test – by Freeilm.com

Honors Chemistry Chapter 10 Assessment Flashcards | Quizlet

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