Matter Flashcards
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Questions and Answers

What is matter?

  • Electrically charged atoms
  • A fixed position of atoms relative to each other
  • Anything that has a mass and takes up space (correct)
  • Particles with a positive charge

    • What are the smallest parts of matter?

    Atoms

    What are protons?

    Particles with a positive charge.

    What are neutrons?

    <p>Particles that have no electric charge.</p> Signup and view all the answers

    What are electrons?

    <p>Negatively charged particles that move around outside the nucleus.</p> Signup and view all the answers

    What is an atomic number?

    <p>The number of protons in an atom's nucleus.</p> Signup and view all the answers

    What is mass number?

    <p>The number of protons and neutrons making up the atom's nucleus.</p> Signup and view all the answers

    What is an isotope?

    <p>Atoms of the same element that have different numbers of neutrons.</p> Signup and view all the answers

    What is a compound?

    <p>When atoms of more than one element combine.</p> Signup and view all the answers

    What is a bond?

    <p>The force that holds atoms in compounds together.</p> Signup and view all the answers

    What is a covalent bond?

    <p>Bonds formed by sharing electrons.</p> Signup and view all the answers

    What are ionic bonds?

    <p>Atoms that combine if they become positively or negatively charged.</p> Signup and view all the answers

    What are ions?

    <p>Electrically charged atoms.</p> Signup and view all the answers

    What is a mixture?

    <p>Two or more substances that are not chemically combined.</p> Signup and view all the answers

    What is a heterogeneous mixture?

    <p>Components that are not evenly mixed.</p> Signup and view all the answers

    What is a homogeneous mixture?

    <p>Also called solutions, components are evenly mixed.</p> Signup and view all the answers

    What is density?

    <p>Mass divided by its volume.</p> Signup and view all the answers

    What are solids?

    <p>The matter's atoms are in a fixed position relative to each other.</p> Signup and view all the answers

    What are liquids?

    <p>Atoms are attracted to each other but can change positions.</p> Signup and view all the answers

    What are gases?

    <p>Atoms have almost no attractive force on each other and move freely.</p> Signup and view all the answers

    Study Notes

    Matter

    • Matter consists of anything that possesses mass and occupies space.
    • Composed of minuscule particles known as atoms.

    Atoms

    • Atoms represent the fundamental building blocks of matter.
    • They are the smallest indivisible units of matter.

    Protons

    • Protons are positively charged particles found within an atom's nucleus.

    Neutrons

    • Neutrons are neutral particles that carry no electric charge.

    Electrons

    • Electrons are negatively charged particles that orbit around the nucleus of an atom.

    Atomic Number

    • Defined as the total count of protons in an atom's nucleus, which also equals the number of electrons in the outer electron cloud.

    Mass Number

    • The mass number refers to the sum of protons and neutrons in an atom's nucleus.
    • For example, oxygen has a mass number of 16.

    Isotope

    • Isotopes are variants of the same element that have differing numbers of neutrons.

    Compound

    • Compounds are formed when atoms of two or more different elements chemically bond together.

    Bond

    • Bonds are the attractive forces that hold atoms together within compounds.

    Covalent Bond

    • Covalent bonds are formed through the sharing of electrons between atoms.

    Ionic Bonds

    • Ionic bonds occur when atoms combine by transferring charges, resulting in positively or negatively charged ions.

    Ions

    • Ions are atoms that carry an electric charge due to the loss or gain of electrons.

    Mixture

    • A mixture consists of two or more substances that are not chemically combined, allowing for separation.

    Heterogeneous Mixture

    • In a heterogeneous mixture, the components are not uniformly distributed, exemplified by a salad.

    Homogeneous Mixture

    • Also known as solutions, homogeneous mixtures exhibit uniform composition throughout, making individual components invisible.

    Density

    • Density is defined as mass divided by volume, with its measurement expressed in grams per cm³.

    Solids

    • In solids, atoms are fixed in place relative to one another, maintaining a rigid structure.

    Liquids

    • In liquids, atoms are attracted to each other but can move and change positions, allowing for a flowing nature.

    Gases

    • In gases, atoms experience minimal attractive forces, enabling them to move freely and expand to fill their container.

    Plasma

    • Plasma is a state of matter that is composed of charged particles but requires further definition.

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    Test your knowledge of matter with this quiz on flashcards. Learn about key concepts such as atoms, protons, neutrons, and electrons. Perfect for students studying the basics of science.

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