Midterm Reviews Chapter 1-3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the formula for percent error? | [(Experimental-actual value)/actual] x 100
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| What is chemistry? | the study of matter and the changes it can undergo
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| What is the unit for mass? | gram
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| What is the unit for volume? | milliliter (mL) or liter (l)
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| What is the energy carried by moving objects? | kinetic energy
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| What name a unit of energy used in the metric system? | calorie
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| What does the Law of conservation of mass state? | In any process, energy is neither created nor destroyed
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| Name 3 changes in state of matter | melting, boiling, freezing, evaporating, condensing (etc)
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| What kind of changes are crushing, cutting, boiling, melting? | physical chenges
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| What is an element? | a substance that cannot be separated into simpler substances by a chemical change
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| What is a compound? | a substance that contains two or more elements that are chemically combined in a fixed raio
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| Name 3 physical properties of matter. | density, mass, melting point, color, texture (etc.)
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| What is an atom? | the smallest particle of an element that retains both the physical and chemical properties of an element
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| Who stated that all atoms of the same element are always identical? | Dalton
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| The mass of a neutron is equal to the mass of what other subatomic particle? | proton
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| Which of the 3 subatomic particles has the smallest mass? | electron
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| What is the charge of an electron? | negative
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| What is the charge of a proton? | positive
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| What is the charge of a neutron? | neutral
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| Which subatomic particles are located in the nucleus? | protons and neutrons
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| An element has an atomic number of 46. How many protons and electrons are there in a neutral atom? | 46 protons and 46 electrons
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| What does the sum of protons and neutrons equal? | mass number
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| How do isotopes of the same element differ? | number of neutrons
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| When writing a nuclear symbol, what is the in upper left corner? | mass number
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| When writing a nuclear symbol, what is the lower left corner? | atomic number
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| The atomic number of an element is the number of what subatomic particle? | proton
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| What is the mass number of an atom that has 15 protons and 17 neutrons? | 32
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| What is the charge of an atom that loses two electrons? | +2
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| What is the charge of an atom that gains 3 electrons? | -3
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| What is the charge of an atom when protons and electrons are equal? | neutral
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| What is the charge of an atom that gains 3 electrons? | -3
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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