Question

drag each the to the correct location. classify each substance as a pure substance or a mixture. pure substance mixture copper, which consists of only one kind of atom carbon dioxide, which has two atoms of oxygen for each atom of carbon table salt, which can be separated into sodium and chlorine only by chemical processes a solution of sugar dissolved in water seawater, which can be purified by filtering it

Explanation:

To solve this, we first recall the definitions: a pure substance has a fixed composition (element or compound), while a mixture has variable composition (physical combination of substances).

Pure Substance (fixed composition, element or compound):

• Copper: Element (only one type of atom).
• Carbon dioxide: Compound (two O atoms per C atom, fixed formula \( \text{CO}_2 \)).
• Table salt (sodium chloride): Compound (fixed ratio of Na and Cl, \( \text{NaCl} \), separated by chemical means).

Mixture (variable composition, physical combination):

• Seawater: Contains water, salts, etc.; purified by filtering (physical process).
• Sugar solution (sugar dissolved in water): Mixture of sugar and water (physical combination).

Classification:

• Pure Substance:
• copper, which consists of only one kind of atom
• carbon dioxide, which has two atoms of oxygen for each atom of carbon
• table salt, which can be separated into sodium and chlorine only by chemical processes

• Mixture:
• seawater, which can be purified by filtering it
• a solution of sugar dissolved in water

Answer:

(Drag to Columns):

• Pure Substance column:

copper, which consists of only one kind of atom
carbon dioxide, which has two atoms of oxygen for each atom of carbon
table salt, which can be separated into sodium and chlorine only by chemical processes

• Mixture column:

seawater, which can be purified by filtering it
a solution of sugar dissolved in water