Month: July 2024

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  1. What is matter?
    Matter is anything that possesses mass and occupies space.
  2. What are the two main categories of matter?
    Elements and compounds.
  3. What is an element?
    A substance made up of entirely one type of atom.
  4. What is a compound?
    A substance consisting of two or more different elements chemically bonded together.
  5. What does the Kinetic Theory of Matter state?
    All matter is composed of tiny, discrete particles in constant motion.
  6. What are the fundamental particles of matter?
    Atoms, molecules, and ions.
  7. What is an atom?
    The smallest particle of an element that retains the chemical properties of that element.
  8. What is a molecule?
    Two or more atoms chemically bonded together.
  9. What is an ion?
    An atom or molecule that has gained or lost electrons, resulting in a net electrical charge.
  10. What are the three primary states of matter?
    Solid, liquid, and gas.
  11. Describe the arrangement of particles in a solid.
    Closely packed in a fixed arrangement.
  12. Describe the arrangement of particles in a liquid.
    Closely packed, but less tightly than solids, and can move around.
  13. Describe the arrangement of particles in a gas.
    Far apart with weak attractive forces.
  14. What is evaporation?
    The process of a liquid changing to a gas.
  15. What is melting?
    The process of a solid changing to a liquid.
  16. What is boiling?
    The process of a liquid changing rapidly to a gas.
  17. What is freezing?
    The process of a liquid changing to a solid.
  18. What is condensation?
    The process of a gas changing to a liquid.
  19. What is sublimation?
    The process of a solid changing directly to a gas.
  20. What happens to the temperature of naphthalene during melting?
    It remains constant.

整数的乘除混合运算 – 找空格里的数 1

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整数的加减混合运算 – 找空格里的数

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整数的加法 – 找空格里的数

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Question: 找出空格里的加数
Answer: 20439 + {31827} + 24314 = 76580

Instruction:

  1. Addition of three 5 digits integer, with an addend left blank and sum given.
  2. The sum must not exceed 100000.
  3. Make the question just “找出空格里的加数” without the addition of the 3 numbers.
  4. put the addition of the 3 numbers together with the bracket in the answer column.
  5. remove the “答案 = {answer}” in the second column
Question Answer Steps of Solution
找出空格里的加数 18452 + {43829} + 27619 = 89900 89900 – 18452 – 27619 = 43829
找出空格里的加数 21567 + {35016} + 19873 = 76456 76456 – 21567 – 19873 = 35016
找出空格里的加数 19384 + {37420} + 14296 = 71100 71100 – 19384 – 14296 = 37420
找出空格里的加数 27619 + {25138} + 34012 = 86769 86769 – 27619 – 34012 = 25138
找出空格里的加数 14567 + {42731} + 21852 = 79150 79150 – 14567 – 21852 = 42731
找出空格里的加数 23456 + {29874} + 14321 = 67651 67651 – 23456 – 14321 = 29874
找出空格里的加数 17892 + {31607} + 28701 = 78200 78200 – 17892 – 28701 = 31607
找出空格里的加数 20234 + {25165} + 30760 = 76159 76159 – 20234 – 30760 = 25165
找出空格里的加数 28674 + {16821} + 28795 = 74290 74290 – 28674 – 28795 = 16821
找出空格里的加数 13457 + {39862} + 26718 = 80037 80037 – 13457 – 26718 = 39862

整数的加减混合运算 – 找空格里的数 – 1

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