Matter and Periodic Table Matter- anything that has mass and takes
... -If two atoms of the same element have different number of neutrons then it is an isotope. Atomic Mass = found on the periodic table = average of all isotopes masses ...
... -If two atoms of the same element have different number of neutrons then it is an isotope. Atomic Mass = found on the periodic table = average of all isotopes masses ...
2 ppt
... determines the element # of protons = atomic number this also tells you # of electrons ...
... determines the element # of protons = atomic number this also tells you # of electrons ...
Key
... elements are in the upper right side of the periodic table. 10. Atoms generally become smaller with increasing atomic number within a period because (A) of additional electron repulsion. (B) of increased effective nuclear charge. (C) smaller electrons are used later in a period. (D) the nucleus abso ...
... elements are in the upper right side of the periodic table. 10. Atoms generally become smaller with increasing atomic number within a period because (A) of additional electron repulsion. (B) of increased effective nuclear charge. (C) smaller electrons are used later in a period. (D) the nucleus abso ...
TEST REVIEW KEY: STANDARDS 7-10 Practice Problems: 1. How
... 9. Atoms of the same element have the same number of PROTONS 10. The modern periodic table is arranged in order of increasing ATOMIC NUMBER 11. What three things determine the atomic mass of an element? a. Number of isotopes b. Mass of individual isoptopes c. Natural frequency/ % abundance of each i ...
... 9. Atoms of the same element have the same number of PROTONS 10. The modern periodic table is arranged in order of increasing ATOMIC NUMBER 11. What three things determine the atomic mass of an element? a. Number of isotopes b. Mass of individual isoptopes c. Natural frequency/ % abundance of each i ...
Darlington High School EDI Lesson Plan Teacher: L. Grooms
... PS2.1 Compare the subatomic particles, protons, neutrons and electrons in regard to the mass, location, and charge and explain how these particles affect the properties of an atom. PS 2.3 Explain the trends of the periodic table based on the elements’ valence electrons and atomic number. PS 2.4 Use ...
... PS2.1 Compare the subatomic particles, protons, neutrons and electrons in regard to the mass, location, and charge and explain how these particles affect the properties of an atom. PS 2.3 Explain the trends of the periodic table based on the elements’ valence electrons and atomic number. PS 2.4 Use ...
Chemistry - Chapter 2 - WSCC Biology Tutoring
... Phosphorus, and Sulfer, also known as CHNOPS. These elements make up about 95% of the body weight of all organisms. ...
... Phosphorus, and Sulfer, also known as CHNOPS. These elements make up about 95% of the body weight of all organisms. ...
PowerPoint プレゼンテーション
... The octet rule says that atoms will be more stable when they have a full outer shell… usually 8 valence electrons. ...
... The octet rule says that atoms will be more stable when they have a full outer shell… usually 8 valence electrons. ...
Name: Date: ______ ABC# _____
... 7. Any sample of an element as it occurs in nature is a mixture of different ISOTOPES (atoms with the same number of protons but different numbers of neutrons). More Information (a) The number BELOW THE SYMBOL for each element on the periodic table is called the ...
... 7. Any sample of an element as it occurs in nature is a mixture of different ISOTOPES (atoms with the same number of protons but different numbers of neutrons). More Information (a) The number BELOW THE SYMBOL for each element on the periodic table is called the ...
Lecture notes chapter 4
... example, N2 and O2). Some elements are polyatomic and they consist of many atoms (for example, O3 and S8). Allotropes: different forms of a given element are called allotropes. The structure of solid non-metallic elements are more varied than those of metals. The three allotropes of carbon are famil ...
... example, N2 and O2). Some elements are polyatomic and they consist of many atoms (for example, O3 and S8). Allotropes: different forms of a given element are called allotropes. The structure of solid non-metallic elements are more varied than those of metals. The three allotropes of carbon are famil ...
structure of the atom
... same number of protons but different numbers of neutrons). More Information (a) The number BELOW THE SYMBOL for each element on the periodic table is called the ____________________ ___________________. ...
... same number of protons but different numbers of neutrons). More Information (a) The number BELOW THE SYMBOL for each element on the periodic table is called the ____________________ ___________________. ...
Acids and Bases B.pps
... Electrons are almost 2000 times smaller than protons and neutrons, so almost all the mass of an atom is concentrated in its nucleus. ...
... Electrons are almost 2000 times smaller than protons and neutrons, so almost all the mass of an atom is concentrated in its nucleus. ...
Periodic Trends - Issaquah Connect
... – ½ the distance between the nuclei of two atoms of the same element when the atoms are joined ...
... – ½ the distance between the nuclei of two atoms of the same element when the atoms are joined ...
Document
... 17. An element with an atomic number of 35 and an atmic mass of 80 would have _____protons, ______electrons, and _______neutrons. 18. What type of reaction is shown in the following chemical equation: 2H2O → 2H2 + O2? 19. Each substance to the right of the arrow in a chemical equation is a ________ ...
... 17. An element with an atomic number of 35 and an atmic mass of 80 would have _____protons, ______electrons, and _______neutrons. 18. What type of reaction is shown in the following chemical equation: 2H2O → 2H2 + O2? 19. Each substance to the right of the arrow in a chemical equation is a ________ ...
Chemistry Study Cards Chapter 5 (3-2) The length of each period in
... gained, or shared when atoms form molecules are called When chemical compounds form, lost, gained, or shared. valence electrons are those that may be The number of valence electrons in Group 1 elements is ...
... gained, or shared when atoms form molecules are called When chemical compounds form, lost, gained, or shared. valence electrons are those that may be The number of valence electrons in Group 1 elements is ...
Atomic Theory - All I Really Need to Know I Learned In
... Orbits further from the nucleus have more energy. Orbits are called energy levels or electron shells. – Solar system model, planets orbiting the sun. ...
... Orbits further from the nucleus have more energy. Orbits are called energy levels or electron shells. – Solar system model, planets orbiting the sun. ...
File
... Number - the number of protons in the nucleus of an atom of an element Atoms are electrically neutral • Tells how many electrons there are also! ...
... Number - the number of protons in the nucleus of an atom of an element Atoms are electrically neutral • Tells how many electrons there are also! ...
Atomic Theory
... Orbits further from the nucleus have more energy. Orbits are called energy levels or electron shells. – Solar system model, planets orbiting the sun. ...
... Orbits further from the nucleus have more energy. Orbits are called energy levels or electron shells. – Solar system model, planets orbiting the sun. ...
Chapter 4 - Germainium.net
... • Atoms of a given element are identical in size, mass, and chemical properties, and are different from those of another element. • Different atoms combine in simple whole number ratios to form compounds. • In a chemical reaction, atoms are separated, combined or rearranged. ...
... • Atoms of a given element are identical in size, mass, and chemical properties, and are different from those of another element. • Different atoms combine in simple whole number ratios to form compounds. • In a chemical reaction, atoms are separated, combined or rearranged. ...
Name: _key Date: ______ Period: Unit 3 – Atomic Structure Review
... Boron has two naturally occurring isotopes with masses of 10.0129 amu which occupies 19.91 percent and another isotope of 11.0093 amu and occupying 80.09 percent. Calculate the average atomic mass of Boron. (10.0129amu)(19.91) + (11.0093)(80.09) ...
... Boron has two naturally occurring isotopes with masses of 10.0129 amu which occupies 19.91 percent and another isotope of 11.0093 amu and occupying 80.09 percent. Calculate the average atomic mass of Boron. (10.0129amu)(19.91) + (11.0093)(80.09) ...
Atoms and elements
... • Today scientists know that electrons do not actually orbit the nucleus as in Bohr's planetary model. • The electron cloud model is now used to describe atoms. • In this model, electrons dart about within an energy level in an ever-changing path. • Most of this path falls into a region called an el ...
... • Today scientists know that electrons do not actually orbit the nucleus as in Bohr's planetary model. • The electron cloud model is now used to describe atoms. • In this model, electrons dart about within an energy level in an ever-changing path. • Most of this path falls into a region called an el ...
File
... [Potassium, Calcium, Sulfur, Neon] has properties most similar to oxygen. [Calcium, Potassium, Chlorine, Sodium] has two valence electrons. Periods form [horizontal, vertical] rows on the periodic table and show the number of [energy levels, valence e-]. Most elements on the periodic table are [meta ...
... [Potassium, Calcium, Sulfur, Neon] has properties most similar to oxygen. [Calcium, Potassium, Chlorine, Sodium] has two valence electrons. Periods form [horizontal, vertical] rows on the periodic table and show the number of [energy levels, valence e-]. Most elements on the periodic table are [meta ...
Pretest time!
... Pretest time! Clear desk except for pen or pencil Done? Turn it in, pick up a pink packet and read the periodic table lab ...
... Pretest time! Clear desk except for pen or pencil Done? Turn it in, pick up a pink packet and read the periodic table lab ...
ATOMIC STRUCTURE: Atomic History
... 1. Electrons are not stationary in orbits 2. Electrons can move around within an orbit to any random spot that they find, and can also move between levels within an atom ...
... 1. Electrons are not stationary in orbits 2. Electrons can move around within an orbit to any random spot that they find, and can also move between levels within an atom ...