# data[].attributes.headline
Transparency: this is a substance's ability to allow light to pass through it.

# data[].attributes.subject
Transparency: this is a substance's ability to allow light to pass through it.

# data[].attributes.headline
Tenacity: is the opposition a material has against breaking or becoming deformed.

# data[].attributes.subject
Tenacity: is the opposition a material has against breaking or becoming deformed.

# data[].attributes.headline
Hardness: is the resistance of a substance against being scratched by a material. The harder a substance is, the more difficult it is to scratch it.

# data[].attributes.subject
Hardness: is the resistance of a substance against being scratched by a material. The harder a substance is, the more difficult it is to scratch it.

# data[].attributes.body
Density: this shows the amount of mass that fits into a certain volume. This is specific to each substance and is measured in grammes per cubic centimetre

# data[].attributes.body
Matter is a substance that has inertia and occupies physical space. According to modern physics, matter consists of various types of particles, each with mass and size. The most familiar examples of material particles are the electron, the proton and the neutron. Combinations of these particles form atoms.