Exemplar exam question – Chapter 2
... The first answer is probably worthy of only 1 mark as it does not make clear that isotopes are different atoms of the same element. The second answer would probably score 0. Although the idea of the same element and different number of neutrons is mentioned, the student has not mentioned different a ...
... The first answer is probably worthy of only 1 mark as it does not make clear that isotopes are different atoms of the same element. The second answer would probably score 0. Although the idea of the same element and different number of neutrons is mentioned, the student has not mentioned different a ...
Section 2.1
... • All atoms of a given element are identical to one another in mass and other properties, but atoms of an element are unique to that element only. • Atoms of an element are not changed into atoms of a different element by chemical reactions; they are neither created nor destroyed. • Compounds are fo ...
... • All atoms of a given element are identical to one another in mass and other properties, but atoms of an element are unique to that element only. • Atoms of an element are not changed into atoms of a different element by chemical reactions; they are neither created nor destroyed. • Compounds are fo ...
Atom - Sites
... atoms join together chemically. •Combinations of two or more different elements are called compounds. •All compounds are molecules but not all molecules are compounds. (ex. H2O vs. O2) •Molecules can also join together to form larger molecules. •Many, many repeating small molecules joined together f ...
... atoms join together chemically. •Combinations of two or more different elements are called compounds. •All compounds are molecules but not all molecules are compounds. (ex. H2O vs. O2) •Molecules can also join together to form larger molecules. •Many, many repeating small molecules joined together f ...
Lesson 13 - Highline Public Schools
... The average atomic mass of an element is the weighted average of the masses of the isotopes in a sample of the element. The most common isotope of an element, frequently has a mass that is close to the average atomic mass given in the periodic table. ...
... The average atomic mass of an element is the weighted average of the masses of the isotopes in a sample of the element. The most common isotope of an element, frequently has a mass that is close to the average atomic mass given in the periodic table. ...
File
... All matter is made up of tiny particles called atoms Atoms of the same element are identical in size, mass, properties Atoms cannot be subdivided, created or destroyed Atoms of different elements combine to form chemical compounds ...
... All matter is made up of tiny particles called atoms Atoms of the same element are identical in size, mass, properties Atoms cannot be subdivided, created or destroyed Atoms of different elements combine to form chemical compounds ...
Guided Notes: The Atom
... Millikan-oil drop experiment; found quantity of charge on an _________: carries exactly _____________ of charge, and mass is 1/1840 the mass of a proton Rutherford-1910; __________________ experiment; model of the atom- discovered nucleus and that the atom is mostly empty space ...
... Millikan-oil drop experiment; found quantity of charge on an _________: carries exactly _____________ of charge, and mass is 1/1840 the mass of a proton Rutherford-1910; __________________ experiment; model of the atom- discovered nucleus and that the atom is mostly empty space ...
answers
... c.) Rutherford – discovered positively charged nucleus d.) Bohr – solar system model of atoms, energy levels at increasing distance from nucleus ...
... c.) Rutherford – discovered positively charged nucleus d.) Bohr – solar system model of atoms, energy levels at increasing distance from nucleus ...
SNC1D0 Atomic History
... electrons orbiting around the nucleus. Later experiments showed that the positively charged particles, now called protons, have an equal but opposite charge to the electrons, and have a mass 1836 x greater! The neutron and the existence of isotopes were also discovered ...
... electrons orbiting around the nucleus. Later experiments showed that the positively charged particles, now called protons, have an equal but opposite charge to the electrons, and have a mass 1836 x greater! The neutron and the existence of isotopes were also discovered ...
September 28th Notes
... Atomic Structure Element: matter that is composed of one type of atom. Elements are abbreviated in scientific shorthand- either a letter or a pair of letters called a chemical symbol. Ex- Aluminum =Al Copper=Cu Atom- smallest piece of matter that still has the properties of the element. Protons- pos ...
... Atomic Structure Element: matter that is composed of one type of atom. Elements are abbreviated in scientific shorthand- either a letter or a pair of letters called a chemical symbol. Ex- Aluminum =Al Copper=Cu Atom- smallest piece of matter that still has the properties of the element. Protons- pos ...
– Units 5-7 Review Honors Chemistry Unit 5
... Define valence electron. How is the number of valence electrons of an element related to the group/family number? ...
... Define valence electron. How is the number of valence electrons of an element related to the group/family number? ...
8.P.1.1 Warm-Up Questions for Website
... the mixture until the sand settles on the bottom. B.Pour the mixture through filter paper. C.Heat the mixture on a hot plate. D.Dissolve the salt by adding water to the mixture. ...
... the mixture until the sand settles on the bottom. B.Pour the mixture through filter paper. C.Heat the mixture on a hot plate. D.Dissolve the salt by adding water to the mixture. ...
Ch4StudyGuide
... Why do most atoms have no charge even though they are made up of positively charged protons and negatively charged electrons? ...
... Why do most atoms have no charge even though they are made up of positively charged protons and negatively charged electrons? ...
What is the history of chemistry and elements
... From regions they’re found in, named after scientists, or from Greek words Some element’s symbols are the first letter of it’s name (hydrogen – H, sulfur – S) Symbols can also be the first letter and another within the word. Some come from the name of the element in Latin or Greek. Protons – positiv ...
... From regions they’re found in, named after scientists, or from Greek words Some element’s symbols are the first letter of it’s name (hydrogen – H, sulfur – S) Symbols can also be the first letter and another within the word. Some come from the name of the element in Latin or Greek. Protons – positiv ...
Periodic Table Quiz
... They have the ability to be pulled into wires. They have the ability to be hammered into sheets. They have the ability to be liquid at room temperature. They have the ability to conduct electricity only under certain conditions. ...
... They have the ability to be pulled into wires. They have the ability to be hammered into sheets. They have the ability to be liquid at room temperature. They have the ability to conduct electricity only under certain conditions. ...
Chapter 3: The Structure of Matter
... compound are usually different from the elements that make it •Example: Liquid water is made up of hydrogen gas and oxygen gas ...
... compound are usually different from the elements that make it •Example: Liquid water is made up of hydrogen gas and oxygen gas ...
Periodic Table
... Dalton’s Atomic Theory 1. All matter is composed of extremely small particles ...
... Dalton’s Atomic Theory 1. All matter is composed of extremely small particles ...
Atoms
... Atomic mass: the average number of ________________ and ________________ in an atom. This is the ________________ mass of the element compared to ________________ as a standard. ...
... Atomic mass: the average number of ________________ and ________________ in an atom. This is the ________________ mass of the element compared to ________________ as a standard. ...
Atomic Structure - hrsbstaff.ednet.ns.ca
... So, what’s up with all these isotopes anyway? In nature elements are not made up of atoms that are all exactly the same! Some will be heavier than others, even though they are still the same type of atom. C-12 and C-14 are both Carbon, with all the usual Carbon properties, but the C-14 has two more ...
... So, what’s up with all these isotopes anyway? In nature elements are not made up of atoms that are all exactly the same! Some will be heavier than others, even though they are still the same type of atom. C-12 and C-14 are both Carbon, with all the usual Carbon properties, but the C-14 has two more ...
