10 Questions
Luminescent quantum dots are classified as nanomaterials if their external dimensions are between 1 nm and 100 nm.
True
According to the European Commission, fullerenes, graphene flakes, and single-wall carbon nanotubes with external dimensions below 1 nm are not considered nanomaterials.
False
The specific surface per unit volume threshold for defining a material as a nanomaterial is below 60 m2/cm3 according to the European Commission's recommendation.
False
Nano-specific properties include magnetic, optical, electronic, and chemical properties.
True
If 100% of the particles in a material have external dimensions in the range 1 nm - 100 nm, it meets the EC definition of a nanomaterial.
False
Bottom-up synthesis of nanomaterials typically involves starting from individual atoms or molecules and building the structure upwards.
True
Top-down techniques in nanomaterial synthesis refer to breaking down larger structures into smaller nanoscale components.
True
Nanoparticles are considered nanomaterials only if they have a specific surface per unit volume above 60 m2/cm3.
True
Bacterium can be classified as nanomaterials if their size falls within the range of 1 nm - 100 nm as per the EC definition.
False
Human-made sand deposits do not qualify as nanomaterials based on the European Commission's definition.
True
Test your knowledge on the interaction of colloidal particles such as SiO2 with biological membranes and red blood cells. Explore topics like membranolysis, hemolysis, and adverse outcome pathways associated with quartz particles.
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