Chapter 3.1 PPT
... different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole ...
... different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole ...
Final Exam Review Booklet - Mrs. McKenzie`s Chemistry and ICP
... Ways to recognize a chemical change has taken place (at least 5) ...
... Ways to recognize a chemical change has taken place (at least 5) ...
Atomic Structure
... • Atomic radius – the distance from the nucleus to the outer edge of the electron cloud. • Ionization energy - The energy required to remove the outermost (highest energy) electron from a neutral atom in its ground state in order to form a cation. • Electron affinity - The energy given off when a ne ...
... • Atomic radius – the distance from the nucleus to the outer edge of the electron cloud. • Ionization energy - The energy required to remove the outermost (highest energy) electron from a neutral atom in its ground state in order to form a cation. • Electron affinity - The energy given off when a ne ...
Matter and Energy
... Properties of Matter Practice 1. Describe each of the following properties as physical or chemical: a. neon is a color gas at room temperature b. apple slices turn brown when exposed to air c. phosphorus will ignite when exposed to air d. at room temperature, mercury is a liquid e. propane gas is c ...
... Properties of Matter Practice 1. Describe each of the following properties as physical or chemical: a. neon is a color gas at room temperature b. apple slices turn brown when exposed to air c. phosphorus will ignite when exposed to air d. at room temperature, mercury is a liquid e. propane gas is c ...
Cahpter 19 – Properties of Atoms and the Periodic table
... retains properties of the element Atomic Particles Protons (p+) = positive charged particles Neutrons (no) = uncharged particles Electrons (e-)= negative charged particles ...
... retains properties of the element Atomic Particles Protons (p+) = positive charged particles Neutrons (no) = uncharged particles Electrons (e-)= negative charged particles ...
Test 4 Review
... Covalent Bonds. Covalent bonds are bonds formed by sharing electrons. The electrons of one atom are attracted to the protons of another, but neither atom pulls strongly enough to remove an electron from the other. Covalent bonds form when the electronegativity difference between the elements is less ...
... Covalent Bonds. Covalent bonds are bonds formed by sharing electrons. The electrons of one atom are attracted to the protons of another, but neither atom pulls strongly enough to remove an electron from the other. Covalent bonds form when the electronegativity difference between the elements is less ...
Date
... The group of electrons revolving around the nucleus of an atom; a cloudlike group of electrons. Elements forming one of the vertical columns of the periodic table. A positively or negatively charged atom due to gain or loss of electrons. One of two or more atoms having the same atomic number but dif ...
... The group of electrons revolving around the nucleus of an atom; a cloudlike group of electrons. Elements forming one of the vertical columns of the periodic table. A positively or negatively charged atom due to gain or loss of electrons. One of two or more atoms having the same atomic number but dif ...
Standard Atomic Notation 17 35 mass # atomic
... Niels Bohr, suggested the following: electrons can move around the nucleus in nearly circular orbits each electron has a specific amount of energy the farther away from the nucleus the greater the amount of energy electrons cannot exist 'between' these orbits, butcan move up and down from one or ...
... Niels Bohr, suggested the following: electrons can move around the nucleus in nearly circular orbits each electron has a specific amount of energy the farther away from the nucleus the greater the amount of energy electrons cannot exist 'between' these orbits, butcan move up and down from one or ...
File
... - Metals are elements that have metallic properties like electrical & thermal conductivity, luster - Metalloids are elements that have both metallic and non-metallic properties like silicon which has no luster but can conduct electricity. - The jagged line at the right side of the table separates th ...
... - Metals are elements that have metallic properties like electrical & thermal conductivity, luster - Metalloids are elements that have both metallic and non-metallic properties like silicon which has no luster but can conduct electricity. - The jagged line at the right side of the table separates th ...
What is atomic radius? - KCPE-KCSE
... What is first ionization energy? Ionization is a process in which atoms lose or gain electrons and become ions. The first ionization energy of an element is the energy required to remove one electron from a gaseous atom. M(g) → M+(g) + eThe first ionization energy is therefore a measure of the stre ...
... What is first ionization energy? Ionization is a process in which atoms lose or gain electrons and become ions. The first ionization energy of an element is the energy required to remove one electron from a gaseous atom. M(g) → M+(g) + eThe first ionization energy is therefore a measure of the stre ...
• Ernest Rutherford • gold foil experiment a tiny dense postive core
... a tiny dense postive core called the nucleus surrounded by mostly empty space containing the rapidly moving negative electrons ...
... a tiny dense postive core called the nucleus surrounded by mostly empty space containing the rapidly moving negative electrons ...
Chapter 2choutline - Madison County Schools
... number (chlorine has ______neutrons) Isotopes are atoms of the same element that differ in __________________ and number of neutrons (they have the same number of protons) Isotopes are identified by writing the name or symbol of element followed by its ___________ ____________ (Cl-37 or chlorine-37) ...
... number (chlorine has ______neutrons) Isotopes are atoms of the same element that differ in __________________ and number of neutrons (they have the same number of protons) Isotopes are identified by writing the name or symbol of element followed by its ___________ ____________ (Cl-37 or chlorine-37) ...
Outline Notes Worksheet - Ms. Blake
... o Bohr Model Each electron has a _________________ energy Its distance from the nucleus shows how much energy it has. Electrons can “jump” to a higher ________________ when energy is added. Or move back to their original orbital. (Emits light or gives off heat) Protons and Neutrons o 1917 Ruth ...
... o Bohr Model Each electron has a _________________ energy Its distance from the nucleus shows how much energy it has. Electrons can “jump” to a higher ________________ when energy is added. Or move back to their original orbital. (Emits light or gives off heat) Protons and Neutrons o 1917 Ruth ...
File
... there. Those alpha particles, of course, continued on a straight-line path until they hit the detector screen. 2) Some of the alpha particles were deflected only slightly, usually 2° or less. Geiger found that an alpha particle was, on average, deflected about 1/200th of a __________________________ ...
... there. Those alpha particles, of course, continued on a straight-line path until they hit the detector screen. 2) Some of the alpha particles were deflected only slightly, usually 2° or less. Geiger found that an alpha particle was, on average, deflected about 1/200th of a __________________________ ...
Chem 150 - Fall 2015 Exam I
... c. Describe what will happen to the water if you continue to remove heat (thermal energy) from the water after it reaches 24°C ...
... c. Describe what will happen to the water if you continue to remove heat (thermal energy) from the water after it reaches 24°C ...
Miss Pang`s 2012 Review
... 31. Alkali metals form Family-I of the periodic table of elements. In increasing order of mass, they include lithium, sodium, potassium, rubidium, cesium, and francium. These six elements are grouped in the same family by reason of the similarity of their chemical properties. Which of the following ...
... 31. Alkali metals form Family-I of the periodic table of elements. In increasing order of mass, they include lithium, sodium, potassium, rubidium, cesium, and francium. These six elements are grouped in the same family by reason of the similarity of their chemical properties. Which of the following ...
Name ____ Date
... 1. Recognize the origin and distribution of elements in the universe. 2. Summarize the major experimental evidence that led to the development of various atomic models, both historic and current. 3. Discriminate between the relative size, charge, position and number of protons, neutrons, and electro ...
... 1. Recognize the origin and distribution of elements in the universe. 2. Summarize the major experimental evidence that led to the development of various atomic models, both historic and current. 3. Discriminate between the relative size, charge, position and number of protons, neutrons, and electro ...
Masterton and Hurley Chapter 2
... • Some elements are essential but become toxic at higher concentrations • Selenium ...
... • Some elements are essential but become toxic at higher concentrations • Selenium ...
Matter and Chemical Change PPT
... electron. This electron is found in the first orbital and has room to gain 1 more electron if it comes in contact with another atom. This would then completely fill the first orbital. Nitrogen’s atom has the atomic number of 7 and thus contains 7 electrons. Two of the seven electrons fill the first ...
... electron. This electron is found in the first orbital and has room to gain 1 more electron if it comes in contact with another atom. This would then completely fill the first orbital. Nitrogen’s atom has the atomic number of 7 and thus contains 7 electrons. Two of the seven electrons fill the first ...
Quantitative periodic table – dominoes
... This is a domino style activity. There are 32 cards, allowing it to be used with a whole class. The activity could also be done individually, in pairs or in small groups to produce a complete ordered set of cards. Differentiation: the cards generally increase in difficulty from the start to the end. ...
... This is a domino style activity. There are 32 cards, allowing it to be used with a whole class. The activity could also be done individually, in pairs or in small groups to produce a complete ordered set of cards. Differentiation: the cards generally increase in difficulty from the start to the end. ...
Periodic table
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The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons in the nucleus), electron configurations, and recurring chemical properties. The table also shows four rectangular blocks: s-, p- d- and f-block. In general, within one row (period) the elements are metals on the lefthand side, and non-metals on the righthand side.The rows of the table are called periods; the columns are called groups. Six groups (columns) have names as well as numbers: for example, group 17 elements are the halogens; and group 18, the noble gases. The periodic table can be used to derive relationships between the properties of the elements, and predict the properties of new elements yet to be discovered or synthesized. The periodic table provides a useful framework for analyzing chemical behavior, and is widely used in chemistry and other sciences.Although precursors exist, Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table. He developed his table to illustrate periodic trends in the properties of the then-known elements. Mendeleev also predicted some properties of then-unknown elements that would be expected to fill gaps in this table. Most of his predictions were proved correct when the elements in question were subsequently discovered. Mendeleev's periodic table has since been expanded and refined with the discovery or synthesis of further new elements and the development of new theoretical models to explain chemical behavior.All elements from atomic numbers 1 (hydrogen) to 118 (ununoctium) have been discovered or reportedly synthesized, with elements 113, 115, 117, and 118 having yet to be confirmed. The first 94 elements exist naturally, although some are found only in trace amounts and were synthesized in laboratories before being found in nature. Elements with atomic numbers from 95 to 118 have only been synthesized in laboratories. It has been shown that einsteinium and fermium once occurred in nature but currently do not. Synthesis of elements having higher atomic numbers is being pursued. Numerous synthetic radionuclides of naturally occurring elements have also been produced in laboratories.