Answer:
B
Explanation:
the number of protons never changes even if the atomic mass changes
Chemistry is concerned with:
1) Composition
The composition of matter helps determine how it will behave chemically and physically, and is studied in chemistry
2) Structure
The structure of a certain element or compound also governs how the substance behaves, making it another vital aspect of chemistry
3) Behavior
The behavior of substances is studied in order to have explanations presented for it, expanding our understanding.
Answer:
cornea - Iris - lens - retina.( From outside to inside)
Explanation:
The correct order from outside to inside is cornea - Iris - lens - retina.
The cornea is the front part of the eye. It helps the eye to focus on light. It is transparent.
The Iris is located at the back of the cornea.The quantity of light that falls on the eye is determined by the Iris. The Iris is colored.
Lens allows light to be focused on the retina. It is behind the Iris.
The retina is the part of the eye that senses light. The retina sends the light signal it senses to the brain for interpretation. It is the innermost if all the options given.
Answer:
C. C₆H₁₂
Explanation:
Alkenes are the unsaturated hydrocarbons which form a homologous series with a general formula;
Cₙ H₂ₙ
n in this problem is 6
2n = 2 x 6 = 12
The formula of the compound will be C₆H₁₂
Answer:
The molecules move more slowly and their average kinetic energy decreases
Explanation:
The increased temperature meant that the atoms in liquid had a greater average energy of motion so as the temperature decreases the reaction would be inverse.
