Question

DATE: Resala Language School Science Department-2025 HOME WORK Correct the underlined words: 5-A carbon dioxide molecule is an organic compound. 6 - The molecular formula of nitric acid is \( \mathrm{HNO}_{2} \) 7 - The number of metal atoms in one molecule of Egyptian blue dye is 3. Mark \( (\sqrt{ }) \) or \( (x) \) for each statement, with correction: 1-Vitamin C prevents osteoporosis. 2- The molecular formula ( \( \mathrm{CaCuS}{ }_{14} \mathrm{O}_{10} \) ) represents a red dye. Write the scientific term of each of the following statements: 1-The simplest pure form of matter that cannot be dissociated into simpler forms, either by physical or chemical methods. 2-A dye used by the Ancient Egyptians to color papyri and statues. 3-Mixtures whose components can be distinguished by the naked eye. 4-Substances whose components cannot be separated by the physical methods blood 5-A symbolic formula that expresses the type and number of atoms of the elements that form a molecule thods ion. Give reasons of each of the following: 1-Table salt in water is a homogeneous mixture, while sand in water mixture is a heterogeneous mixture.

          DATE:
Resala Language School
Science Department-2025
HOME WORK
Correct the underlined words:
5-A carbon dioxide molecule is an organic compound.
6 - The molecular formula of nitric acid is \( \mathrm{HNO}_{2} \)
7 - The number of metal atoms in one molecule of Egyptian blue dye is
3.

Mark \( (\sqrt{ }) \) or \( (x) \) for each statement, with correction:
1-Vitamin C prevents osteoporosis.
2- The molecular formula ( \( \mathrm{CaCuS}{ }_{14} \mathrm{O}_{10} \) ) represents a red dye.
Write the scientific term of each of the following statements:
1-The simplest pure form of matter that cannot be dissociated into simpler forms, either by physical or chemical methods.
2-A dye used by the Ancient Egyptians to color papyri and statues.
3-Mixtures whose components can be distinguished by the naked eye.
4-Substances whose components cannot be separated by the physical methods
blood
5-A symbolic formula that expresses the type and number of atoms of the elements that form a molecule
thods
ion.
Give reasons of each of the following:
1-Table salt in water is a homogeneous mixture, while sand in water mixture is a heterogeneous mixture.

DATE:
Resala Language School
Science Department-2025
HOME WORK
Correct the underlined words:
5-A carbon dioxide molecule is an organic compound.
6 - The molecular formula of nitric acid is HNO2
7 - The number of metal atoms in one molecule of Egyptian blue dye is
3.

Mark (√()) or (x) for each statement, with correction:
1-Vitamin C prevents osteoporosis.
2- The molecular formula ( CaCuS14O10 ) represents a red dye.
Write the scientific term of each of the following statements:
1-The simplest pure form of matter that cannot be dissociated into simpler forms, either by physical or chemical methods.
2-A dye used by the Ancient Egyptians to color papyri and statues.
3-Mixtures whose components can be distinguished by the naked eye.
4-Substances whose components cannot be separated by the physical methods
blood
5-A symbolic formula that expresses the type and number of atoms of the elements that form a molecule
thods
ion.
Give reasons of each of the following:
1-Table salt in water is a homogeneous mixture, while sand in water mixture is a heterogeneous mixture.

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