Matter 7th grade

The following image corresponds to the process of...

• Dissolution of salt in water

• Dissolution of sucrose in water

• None of the above

• Colloids process

The following image corresponds to the process of...

• Dissolution of salt in water

• Dissolution of sucrose in water

• None of the above

• Colloids process

The following formulas correspond to: C₁₂H₂₂O₁₁ & NaCl

• Water and salt

• Sucrose and salt

• Carbon and sugar

• None of the above.

Calculate the concentration, in g/L, of an aqueous solution consisting of 5 g of glucose and 75 g of water. In this case, the density of the solution is equal to that of the water, 1.00 g/mL

• 66.67 g/L

• 66.67

• 67

• None of the above.

A solution is saturated if we cannot add more solute

• True

• False

Explain which physical process is represented in the following picture

• Evaporation

• Disolution

• Condesation

• Destilation

Cristalisation is a method use for separating...

• Homogeneous mixtures

• Heterogeneous mixtures

• Suspensions

• Colloids

We prepare 140 g solution of seawater in 150 ml of water. Calculate the concentration of this solution in g/L

• 488.96 g/L

• 488.96

• 489

• None of the above.