Mars (impulsive is its nature) is aggravated by both the Moon (square) and Uranus (semisquare).... Uranus rising, rebelliousness, sudden impulsive actions, eccentricy, self-will are "rising -- in the ascendant" in the personality.
Not looking at your chart, but.... Hmm. Your Moon is not square Mars, but is exactly sesquicuadrate Pluto, her closest and most potent planetary aspect. Moon is highly emphasized in the chart and of superlative power, and is in fact predominant in the life. While quite powerful in her own sign, she beholds only adverse aspects (sesquicuadrate Pluto, opposed Asc, opposed Uranus, conjunct Dragon's Tail, widely but probably effectively quincunx Sun, and in mundane square Mars.)
Both Moon and Mars are dignified by domicile, and both are closely angular (Moon in partile opposition to Asc -- and her nature, intrinsic, by sign, and by aspct contradicts the Capricorn Asc)....So even if not in aspect (zodiacal), they are both so powerful in the makeup that their natures will express strongly and act "as if" in aspect. They are natural enemies and are in mundane square. (Mundane aspects are surely effective -- discount them at your peril.)
This chart, while given some stability by the sextile of Saturn to Sun with Saturn strong by sign, has strong signs of an erratic, wandering nature, insistent on personal freedom
Why do you find it difficult to see impulsiveness? Mars, impulsive by nature (somewhat toned down by his residence in Scorpio, a Fixed sign [perhaps]), is still subject to outbursts or eruptions from time to time.....and he is conjunct Pluto (strong and resistant, determined, and also prone to use or experience of force, compulsion, violence)...and he is on the MC where everyone can see him -- he "stands above all else" in this chart, at "the zenith."
The chart goes beyond "impulsive;" it is eccentric, insistent on personal freedom (lack of restraint), erratic and undependable, and is like a wild horse who has taken the bit in his mouth and is without reins (self-willed and defiant toward authority).
If Moon is "nurture and protection" -- which the aspect to Pluto shows was not available during childhood -- and the Moon is THE predominant energy in the chart (closely followed by Mars), then might we not deduce that there is in the personality a crying need for nurture and protection? But the mundane square to Mars-Pluto-MC, with its obsession with resisting all forms of authority, control or domination, intervenes and frustrates the drive for protection (and relationships that nurture).
This mundane square is the predominant feature of the chart, and sets the theme of the life. It can be interpreted in various ways, with the above interpretation being one of them. Each of the possible interpretations will be "true." Every aspect in a chart exhibits multiple manifestations, sometimes simultaneous, sometimes consecutive.