Let's talk about testosterone in men.
Testosterone is the primary male sex hormone and an anabolic steroid

Density: 1.1 +_ 0.1g/cm
Matter: Testosterone is made of matter
Conservation of matter: Due to the conservation of matter law, it stays the same as it travels throughout your body

Testosterone is the hormone that initiates the development of a male fetus, including the reproductive organs. plays role during male puberty, sets off growth spurts, hair growth and genital changes. can cause aggressive and sexual behavior in men.
signals the body to make new blood cells, so the muscles and bones stay strong during and after puberty. It enhances libido. Testosterone regulates the secretion of the luteinising hormone and the follicle-stimulating hormone.

Dalton's Atomic Theory
1) All matter is made of atoms. Atoms are indivisible and indestructible.

2) All atoms of a given element are identical in mass and properties

3) Compounds are formed by a combination of two or more different kinds of atoms.

4) A chemical reaction is a rearrangement of atoms.

Electronegativity Trends: 2.55c, 2.2h, 3.44o

Ionization Energy Trends: 1313.9o, 2.10x10^-18h,

Electron Affinity Trends: 153.9c, 72.8h, 141o

Atomic Radius Trends: 60pmo, 53pmh, 70pmc

Melting Point Trends: 5,800kc, 13.99kh, 54.36ko

Lewis dot diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Covalent compounds

All covalent bonds
Carbon-Oxygen moderatly Covalent
Carbon-hydrogen very covalent
Hydrogen-oxygen polar covalent