Typically, an acid and a base react to form a salt and water.
2
开始加热，酚和甲醛(需有酸或碱促使其反应进行)便产生了像紫胶样的液体，能像清漆一样涂于物体表面。
Initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish.
3
当你往泡打粉里加了水，干粉状态的酸和碱溶化，并开始反应，生产出二氧化碳气泡。
When you add water to baking powder, the dry acid and base go into solution and start reacting to produce carbon dioxide bubbles.
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