Grade 6 science interactive worksheet - Free Printable

Let’s go step by step to fill in the missing information about elements, based on standard science knowledge for Grade 6.

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I. What is an Element?

We’re told to use textbook page 107 key points — but since we don’t have the book, we’ll use the standard definition:

> An element is the simplest kind of matter which cannot be broken down into two or more simpler substances by chemical means.

So filling in the blanks:

Ans: An element is the simplest kind of matter which cannot be broken down into two or more simpler substances by chemical means.

*(Note: Some textbooks say “chemical reactions” instead of “chemical means” — both are correct. We’ll go with “chemical means” as it’s commonly used at this level.)*

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II. Select the suitable answer from the following from the drop-down box. [clue: Textbook page no: 101]

Again, we’ll use standard Grade 6 science facts.

1. Elements are made up of atoms.
→ Elements are pure substances made of only one type of atom.

2. Oxygen is the most abundant element in earth’s crust.
→ Actually, oxygen is the most abundant element in Earth’s crust (about 46%). Silicon is second.

3. Air consists of some elements like oxygen that every living thing use for breathing.
→ Air is a mixture, but it contains elemental oxygen (O₂), which is essential for respiration.

4. We can split an element into many simpler substances. False
→ Elements cannot be broken down into simpler substances by chemical or physical means. This statement is false.

5. Curium (or Einsteinium, Fermium, etc.) is an element that is named after a scientist.
→ Many elements are named after scientists. Common examples in Grade 6: Curium (after Marie & Pierre Curie), Einsteinium (after Einstein). Let’s pick Curium as it’s often taught.

6. The classified chart of elements is called as periodic table.

7. Elements are arranged in the periodic table according to their atomic number.
→ Modern periodic table arranges by increasing atomic number (number of protons).

8. The elements in the periodic table are represented by a symbol.
→ Like H for Hydrogen, O for Oxygen, Na for Sodium.

9. The symbol for hydrogen is H and sodium is Na.
→ Hydrogen = H, Sodium = Na (from Latin *Natrium*).

10. Every element has a different atomic number and properties.
→ Each element has a unique number of protons (atomic number) and unique physical/chemical properties.

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Now let’s compile all answers clearly.

Final Answer:

I. Ans: An element is the simplest kind of matter which cannot be broken down into two or more simpler substances by chemical means.

II.
1. Elements are made up of atoms.
2. Oxygen is the most abundant element in earth’s crust.
3. Air consists of some elements like oxygen that every living thing use for breathing.
4. We can split an element into many simpler substances. False
5. Curium is an element that is named after a scientist.
6. The classified chart of elements is called as periodic table.
7. Elements are arranged in the periodic table according to their atomic number.
8. The elements in the periodic table are represented by a symbol.
9. The symbol for hydrogen is H and sodium is Na.
10. Every element has a different atomic number and properties.