Free Printable Periodic Table Worksheets - Free Printable

Part A: Filling in the blanks

We will fill in the blanks using the words provided in the box. Let's go step by step:

#### Sentence 1:
"In 1869, Mendeleev published his arrangement of the known elements in the 'periodic table'. Just over 50 elements were arranged using details of their properties and compounds. This table revealed repeating patterns in the chemical properties of the elements in the same vertical column."

- Just over _ elements: The number of known elements in 1869 was just over 50.
- details of their _ and compounds: Mendeleev used the properties of elements to arrange them.
- revealed _ in the chemical properties: The periodic table showed repeating patterns in the properties of elements in the same vertical column.

#### Sentence 2:
"The elements of the periodic table are arranged in the order of increasing atomic number. The atomic number reflects the number of protons in the nucleus of each atom."

- order of _ atomic number: Elements are arranged in increasing order of atomic number.
- number of _ in the nucleus: The atomic number corresponds to the number of protons in the nucleus.

#### Sentence 3:
"Elements are arranged in rows of increasing atomic numbers called periods. Elements with similar properties are arranged in the same vertical column, called groups."

- rows of increasing atomic numbers called _: Rows are called periods.
- same vertical column, called _: Vertical columns are called groups.

#### Sentence 4:
"Metals are grouped on the left and center of the periodic table. Gasses are positioned on the far right of the periodic table (except hydrogen). Semiconductors are grouped between metals and non-metals and have some properties that are similar to both types of elements."

- Metals are grouped on the left and _: Metals are primarily on the left and center.
- Gasses are positioned on the _: Non-metal gasses are on the far right.
- properties that are _ to both types of elements: Semiconductors have properties similar to both metals and non-metals.

Completed Part A:

1. "In 1869, Mendeleev published his arrangement of the known elements in the 'periodic table'. Just over 50 elements were arranged using details of their properties and compounds. This table revealed repeating patterns in the chemical properties of the elements in the same vertical column."
2. "The elements of the periodic table are arranged in the order of increasing atomic number. The atomic number reflects the number of protons in the nucleus of each atom."
3. "Elements are arranged in rows of increasing atomic numbers called periods. Elements with similar properties are arranged in the same vertical column, called groups."
4. "Metals are grouped on the left and center of the periodic table. Gasses are positioned on the far right of the periodic table (except hydrogen). Semiconductors are grouped between metals and non-metals and have some properties that are similar to both types of elements."

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Part B: Answering the questions

#### Question 1: Which 3 elements are magnetic?
- Answer: Iron (Fe), Nickel (Ni), Cobalt (Co)

These three elements are ferromagnetic at room temperature, meaning they can be magnetized and retain their magnetic properties.

#### Question 2: Which 2 elements are liquid at room temperature?
- Answer: Mercury (Hg), Bromine (Br)

Mercury is a metal that is liquid at room temperature, and bromine is a non-metal halogen that is also liquid at room temperature.

#### Question 3: Which element is used in batteries?
- Answer: Zinc (Zn)

Zinc is commonly used in various types of batteries, such as alkaline batteries and zinc-carbon batteries.

#### Question 4: Which is a significant element found in eggs?
- Answer: Sulfur (S)

Sulfur is an essential component of proteins, which are abundant in eggs. It is part of amino acids like cysteine and methionine.

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Final Answers:

1. Iron (Fe), Nickel (Ni), Cobalt (Co)
2. Mercury (Hg), Bromine (Br)
3. Zinc (Zn)
4. Sulfur (S)

Final Answer:
\boxed{
\text{1. Iron (Fe), Nickel (Ni), Cobalt (Co)} \\
\text{2. Mercury (Hg), Bromine (Br)} \\
\text{3. Zinc (Zn)} \\
\text{4. Sulfur (S)}
}