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G7 Science- Review Mid 1

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  • What PPE can you see in the picture ?
    • Safety goggles • Mask • Ear plugs / hearing protection • Safety gloves • Closed-toed shoes • Hair net / helmet • Lab coat
  • Can you guess what the symbols mean?
    TOXIC: Can cause death when swallowed,breathed in or absorbed through the skin
  • What is Cellular Respiration ?
    Cellular respiration is when cells use food (ex: glucose) to make energy.
  • What is a mixture?
    A mixture is made when two or more substances are combined, but not chemically bonded
  • A _________ is a substance formed when two or more different atoms are chemically bonded together. a. element b. mixture c. compound d. molecule
    c
  • What does the chemical symbol 'K' represent?
    d
  • What are the reactants of aerobic respiration?
    c
  • Which one is of the following is not a step in the scientific method? a. Data b. Definition c. Experiment d. Observation
    b
  • Physical properties of metals?
    Lustrous (shiny) • Good conductor of electricity • Solids with a high melting point • Malleable (can be shaped) Ductile (can be stretched into wires) • Opaque
  • Respiration Equations?
    (Read in the pic)
  • Can you guess what the symbolsmean?
    CORROSIVE: Substances that attack and destroy living tissues, including the eyes and skin
  • What is Atomic number?
    • The atomic number tells us how many protons are in the nucleus of the atoms. The number of electrons is equal to the number of protons
  • Step-by-step process of The Scientific Method
    Observation => Hypothesis=> Prediction => Experiment => Data
  • What is dependent variables?
    A factor that may change as a result of changes made to the independent variable
  • What is a fair test?
    A fair test is an experiment where only one variable is changed, and all other variables are kept the same.
  • In the periodic table, which wow call " group"? How many group the table?
    The vertical columns are called “groups”. There are 18 groups in the periodic table
  • What are the reactants of Photosynthesis? a. Water and oxygen b. Glucose and carbon dioxide c. Water and Carbon dioxide d. Water and glucose
    c
  • What is an element?
    An element is any substance made of only one type of atom.
  • Can you guess what the symbolsmean?
    Highly flammable
  • Atomic structure?
    Atoms consist of three basic particles: protons, electrons, and neutrons.
  • Aerobic respiration requires _________. a. Water b. Sunlight c. Oxygen d. Carbon dioxide
    c
  • Observing physical properties of a substance _______ involve changing the structure of the atom(s). a. don't b. do c. could d. should
    a
  • What are the products of aerobic respiration? a. Glucose, water, and oxygen b. Water, oxygen, and glucose c. Carbon dioxide, water, and Energy d. Carbon dioxide, glucose, and water
    c
  • What is a compound?
    A compound is a substance formed when two or more chemical elements are chemically bonded together.
  • Group number (column) is associated with ____________. a. Valence electrons b. Atomic mass c. Electron shells d. Atomic number
    a
  • Period number (row) is associated with ____________. a. Atomic number b. Electron shells c. Valence electrons d. Atomic mass
    b
  • In the periodic table, which wow call " period"? How many periods the table?
    The horizontal rows are called periods, there are 7 periods in the periodic table.
  • What is independent variables?
    Independent variable: A factor that is changed by the experimenter on purpose
  • What is control variables?
    The variable(s) in an experiment that is always the same
  • Elements in period 7 have ____ electron shells.
    7
  • Physical properties of non-metals?
    Dull (not shiny) • Insulators(poor conductor of electricity) • Substances with low melting point • Brittle when solid(breaks easily) Non-ductile • Transparent
  • The one variable that is changed is called the _________.
    a
  • Sodium has 3 electron shells and 1 valence electron. It belongs in ___________.
    d
  • What is Atomic mass?
    The atomic mass number is how many protons and neutrons are in the nucleus
  • A _________ is made when two or more substances are contained, but not chemically bonded. a. compound b. molecule c. element d. mixture
    d
  • Name Organs or body parts of respiratory system?
    : Nasal passage, pharynx, larynx, trachea, bronchi, bronchioles, lungs, and alveoli
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