REVIEW-Matter: Properties & Changes
3 years ago
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20 QuestionsShow answers
  • Question 1
    60 seconds
    Q. Water (H2O) and table salt (NaCl) can be combined to form salt water. How can this combination be classified?
    answer choices
    As a compound because the water and table salt are chemically combined
    As a compound because the water and table salt form a new pure substance
    As a mixture because the water can be evaporated and physically separated from the table salt
  • Question 2
    60 seconds
    Q. Which best describes an element?
    answer choices
    It is the simplest form of matter
    It can be changed into a compound
    It can be broken down into simpler mixtures
    It is composed of more than one type of atom
  • Question 3
    60 seconds
    Q. A group of science students used water, filter paper and a hot plate to separate a mixture of salt and sand. Which of the following did the students most likely do first?
    answer choices
    Shake the mixture until the sand settles on the bottom
    Pour the mixture through the filter paper
    Heat the mixture on the hot plate
    Dissolve the salt by adding water to the mixture
  • Question 4
    60 seconds
    Q. Hydrogen peroxide has one more oxygen atom than the compound water. What is the result of this extra oxygen atom?
    answer choices
    It makes peroxide more soluble than water
    It makes peroxide more carbonated than water
    It changes most of the properties of the compound
  • Question 5
    60 seconds
    Q. The smallest part of an element that retains the properties of the element is the
    answer choices
    proton
    nucleus
    electron
    atom
  • Question 6
    60 seconds
    Q. How many elements are in the compound sulfuric acid, H2SO4?
    answer choices
    1
    2
    3
  • Question 7
    60 seconds
    Q. Which two elements make up household ammonia, NH3?
    answer choices
    Neon and helium
    Neon and hydrogen
    Nitrogen and helium
    Nitrogen and hydrogen
  • Question 8
    60 seconds
    Q. When potassium and bromine atoms form chemical bonds, which of these is produced?
    answer choices
    An element
    A mixture
    A compound
    A new form of matter
  • Question 9
    60 seconds
    Q. What do the atomic numbers represent?
    answer choices
    Number of atoms
    Number of protons
    Number of neutrons
  • Question 10
    60 seconds
    Q. Which best explains how elements are arranged on the modern periodic table?
    answer choices
    Elements are arranged from fewest protons to most protons
    Elements are arranged from most protons to fewest protons
    Elements are arranged from fewest neutrons to most neutrons
  • Question 11
    60 seconds
    Q. Which property is unique for each element?
    answer choices
    Atomic number
    Mass number
    State of matter
  • Question 12
    60 seconds
    Q. What best describes the reactivity of alkali metals?
    answer choices
    Reactivity increases left to right across a period
    Reactivity decreases left to right across a period
    Reactivity increases down a group
  • Question 13
    60 seconds
    Q. Which action results in a chemical change?
    answer choices
    Apples being cut into slices
    Wood burning in a fireplace
    Wet clothes drying on a clothesline
    Snow being shoveled off of a sidewalk
  • Question 14
    60 seconds
    Q. What changes when gases condense to form liquids?
    answer choices
    Physical mass
    Physical state
    Chemical reactivity
    Chemical composition
  • Question 15
    60 seconds
    Q. Which best represents a physical property of a substance?
    answer choices
    Acids act as a corrosive to metal
    Gold has a density of 19.3 g/cm3
    Sodium combines with chlorine to create sodium chloride
    Hydrochloric acid reacts with zinc metal creating hydrogen gas
  • Question 16
    60 seconds
    Q. Which is the best evidence that a chemical change in matter has occurred?
    answer choices
    A solid melts
    A gas is produced
    Matter is destroyed during a chemical reaction
  • Question 17
    60 seconds
    Q. Which term describes the relationship between the mass and volume of a substance?
    answer choices
    Density
    Solubility
    Specific heat
    Melting point
  • Question 18
    60 seconds
    Q. Which of these is not an example of a physical change?
    answer choices
    Boiling
    Stirring
    Freezing
    Evaporating
  • Question 19
    60 seconds
    Q. A sea creature releases a liquid into the ocean that reacts with the water to form a seashell. Which process does this represent?
    answer choices
    Freezing
    Gas formation
    Change of state
    Precipitate formation
  • Question 20
    60 seconds
    Q. A student kept a notebook during an investigation. Which recorded observation was most likely a physical change?
    answer choices
    The solution was heated for two minutes until it boiled
    A solid formed when two liquids were mixed together
    Two solutions were mixed and the resulting solution felt hot
    The color of two mixed solutions changed from clear to white
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