Electrons are Waves and Particles What’s the Matter? Electrons are Waves and Particles Atoms Isotopes Quantum Theory 100 200 300 400 500

Answer What’s the matter - 100 All of matter is composed of ____, the basic unit of all chemistry. Answer

What’s the matter - 100 ATOMS Back Home

Answer What’s the matter - 200 A(n) _______ is to chemistry as a ______is to biology. Answer

What’s the matter - 200 ATOM…CELL Back Home

Answer What’s the matter - 300 The comparison of the number of atoms in a copper coin the size of a penny with the number of people on Earth is made to illustrate which of the following? That atoms are indivisible That atoms are very small That atoms are very large That in a copper penny, there is one atom for every person on Earth Answer

What’s the matter - 300 THAT ATOMS ARE VERY SMALL Back Home

Answer What’s the matter - 400 The nucleus of an atom has a ___ charge due to the _____ (subatomic particle). Answer

What’s the matter - 400 POSITIVE…PROTON Back Home

Answer What’s the matter - 500 ____ are negatively charged subatomic particles and are about 1/2000 the mass of a proton or neutron. Answer

What’s the matter - 500 ELECTRONS Back Home

Electrons are waves and particles - 100 What is the lowest energy state of an atom called? Answer

Electrons are waves and particles - 100 GROUND STATE Back Home

Electrons are waves and particles - 200 Label each of the pieces of the wave: A B C D Answer

Electrons are waves and particles - 200 A – WAVELENGTH B – CREST C – AMPLITUDE D - TROUGH Back Home

Electrons are waves and particles - 300 As the frequency of a wave increases, the wavelength (increases/decreases) and energy (increases/decreases) Answer

Electrons are waves and particles - 300 DECREASES…INCREASES Back Home

Electrons are waves and particles - 400 A ____ is the smallest amount of energy that can be gained or lost by an atom. Answer

Electrons are waves and particles - 400 QUANTUM Back Home

Electrons are waves and particles - 500 The Heisenberg Uncertainty Principle states: Answer

Electrons are waves and particles - 500 IT IS IMPOSSIBLE TO KNOWN PRECISELY BOTH THE POSITION AND THE MOMENTUM OF AN ELECTRON Back Home

ATOMS - 100 How many neutrons are in 16O? Answer

ATOMS - 100 8 Back Home

ATOMS - 200 How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? Answer

ATOMS - 200 50 PROTONS 50 ELECTRONS 75 NEUTRONS Back Home

As Answer ATOMS - 300 How many neutrons are in the Arsenic atom? 33 74.9216 Answer

As Back Home ATOMS - 300 75 – 33 = 42 neutrons 33 Atomic number 74.9216 Mass number Back Home

ATOMS - 400 What was concluded about the structure of the atomic nucleus as the result of the gold foil experiment? A positively charged nucleus is surrounded by positively charged particles. A positively charged nucleus is surrounded by mostly empty space. A negatively charged nucleus is surrounded by positively charged particles. A negatively charged nucleus is surrounded by mostly empty space. Answer

ATOMS - 400 A POSITIVELY CHARGED NUCLEUS IS SURROUNDED BY MOSTLY EMPTY SPACE. Back Home

ATOMS - 500 What does the atomic mass of an element on the periodic table depend upon? Answer

Back Home ATOMS - 500 MASS OF THE ISOTOPES RELATIVE/PERCENT ABUNDANCE OF THE ISOTOPES Back Home

ISOTOPES - 100 Isotopes of the same element have different ______. Answer

ISOTOPES - 100 NUMBER OF NEUTRONS or MASS NUMBERS Back Home

ISOTOPES - 200 How big are electrons compared to protons and neutrons? Answer

ISOTOPES - 200 Electrons are 1/1840 the size of both protons and neutrons. Back Home

ISOTOPES - 300 What is the difference between these isotopes? Answer

Back Home ISOTOPES - 300 The mass numbers are different. The first isotope has 3 neutrons, the second isotope has 4 neutrons, and the third isotope has 5 neutrons. Back Home

ISOTOPES - 400 Calculate the atomic mass of chlorine using the isotope data below. Answer

ISOTOPES - 400 (34.97 g)(76/100) + (36.97 g)(24/100) = 26.58 g + 8.87 g = 35.45 g Back Home

ISOTOPES - 500 What is the difference between the atomic mass and mass number of an element? Answer

ISOTOPES - 500 THE ATOMIC MASS IS CALCULATED WITH THE MASS OF EACH ISOTOPE AND THE PERCENT ABUNDANCE OF EACH ISOTOPE. THE MASS NUMBER IS THE NUMBER OF PROTONS AND NEUTRONS IN AN ATOM. IT CAN BE ROUNDED BY ATOMIC MASS. Back Home

Answer QUANTUM THEORY - 100 When an electron moves from a lower to a higher energy level, the electron (absorbs/gives off) a quantum of energy. Answer

QUANTUM THEORY - 100 ABSORBS Back Home

Answer QUANTUM THEORY - 200 In the periodic table, the principal quantum number corresponds to the ___. Transition metals Group number Period number Ground state Answer

QUANTUM THEORY - 200 C. PERIOD NUMBER Back Home

Answer QUANTUM THEORY - 300 The _____ quantum number indicates the relative size and energy level, while the ____ quantum number (or sublevels) relates to the shapes of the orbitals. Answer

QUANTUM THEORY - 300 PRINCIPAL…ANGULAR Back Home

Answer QUANTUM THEORY - 400 What is the maximum number of electrons in the second principal energy level (n = 2)? Answer

QUANTUM THEORY - 400 8 Back Home

Answer QUANTUM THEORY - 500 The s sublevel contains ___ orbitals (and 2 electrons) and the p sublevel contains ___ orbitals (and 6 electrons). Answer

QUANTUM THEORY - 500 1…3 Back Home