Periodic Law and Periodic Table
Chemistry ⇒ Atomic Structure and the Periodic Table
Periodic Law and Periodic Table starts at 8 and continues till grade 12.
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See sample questions for grade 8
Describe the trend in atomic size as you move down a group in the periodic table.
Describe the trend in reactivity of alkali metals as you move down the group.
Explain why elements in the same group have similar chemical properties.
The element with atomic number 17 is found in which group of the periodic table?
What is the atomic number of carbon?
What is the general trend of metallic character as you move from left to right across a period?
What is the horizontal row in the periodic table called?
What is the main difference between Mendeleev’s periodic table and the modern periodic table?
(1) Elements in the same group have similar chemical properties. (2) Elements in the same period have the same number of valence electrons. (3) Elements in the same group have the same number of valence electrons. Which of the above statements are correct? (1) Only 1 (2) Only 2 (3) Only 3 (4) 1 and 3
Which of the following elements is a halogen? (1) Fluorine (2) Argon (3) Calcium (4) Iron
Which of the following elements is a noble gas? (1) Oxygen (2) Nitrogen (3) Neon (4) Sodium
Which of the following elements is a nonmetal? (1) Magnesium (2) Chlorine (3) Silver (4) Zinc
Fill in the blank: Elements in the same ________ have similar chemical properties.
Fill in the blank: The element with atomic number 1 is ________.
Fill in the blank: The number of protons in an atom is called its ________ number.
Fill in the blank: The periodic table is arranged in order of increasing ________ number.
True or False: All elements in group 18 are gases at room temperature.
True or False: Elements in the same group have the same number of valence electrons.
True or False: Elements in the same period have the same number of electron shells.
True or False: Hydrogen is placed in group 1 because it has similar properties to alkali metals.
