Study

7th Grade Science 1st Exam Review

  •   0%
  •  0     0     0

  • What safety equipment should you wear when working with acids?
    Eye protection
  • What is sulfur primarily used for?
    Rubber production
  • What is the symbol for?
    Oxidizing
  • What is the symbol for?
    Serious Health Hazard
  • What is the pH range of the pH scale?
    0 to 14
  • What is the symbol for?
    Hazardous to Environment
  • What is the symbol for?
    Flammable
  • What is the symbol for?
    Health Hazard
  • What two elements make up brass?
    Copper and Zinc
  • What alloy is commonly used for cutlery?
    Stainless Steel
  • What pH level is a neutral substance?
    7
  • What does litmus paper indicate?
    pH level
  • What is the symbol for?
    Explosive
  • What color will a strong acid turn on a universal indicator?
    Red
  • What is a characteristic of strong alkalis?
    They are corrosive
  • What property allows metals to be shaped without breaking?
    Malleability
  • What color does red cabbage indicator turn in an alkali?
    Yellow
  • What type of metal is typically used for making jewelry?
    Silver
  • What does "corrosive" mean?
    It can dissolve other materials
  • What does the oxidizing hazard label indicate?
    The substance can give off heat when in contact with another substance
  • What does 24-carat gold mean?
    It is pure gold
  • Which property do non-metals usually have?
    Brittleness
  • What do we call a substance with a pH of 7?
    Neutral
  • Bronze and brass are examples of what?
    Alloys
  • What is the symbol for?
    Corrosive
  • On a universal indicator, what color represents a strong acid?
    Red
  • What is the symbol for?
    Toxic
  • Which process can separate copper sulfate from water?
    Evaporation
  • At what pH does litmus paper turn red?
    Below 7
  • What color does red cabbage juice turn in an alkali?
    Green
  • Why are alloys stronger than pure metals?
    Their structure prevents sliding
  • Which metal is liquid at room temperature?
    Mercury