(d) sodium
except
Resala Language School
Science Department-2025
WEEKLY SHEET 7
Complete the following statements:
(1) One of the mix \( \qquad \) whilose components can be distinguished by the naked eye \( \qquad \) cannot be distinguished by the naked eye. whose components
(2) Vitamin (D) regulates the levels of \( \qquad \) and \( \qquad \) prevent osteoporosis in the blood to
(3). is an example of an organic compound molecule, while. \( \qquad \) example of a polyatomic element molecule. is an
(4) A molecule of nitric acid consists of. \( \qquad \) atoms and
\( \qquad \) elements.
Mark \( (\sqrt{ }) \) or \( (X) \) for each of the following statements, with correction:
(1) The components of the mercury oxide compound can be decomposed into its elements by magnetic separation.( )
(2) A molecule of Egyptian blue dye consists of 24 atoms of two types of elements.( )
(3) The components of a mixture of sand and water can be physically separated by filtration.( )
(4) Both carbon and carbon dioxide are pure substances.( )
You have two samples ( \( A \) ) and (B):
Sample (A): Contains a table salt solution.
Sample (B): Contains water.
(1) Identify the type of each sample (element/compound/mixture).
- Sample (A): \( \qquad \)
- Sample (B): \( \qquad \)