When you take those chemical reactions as a whole, they give you an intense emotional experience, a quicker heartbeat, maybe a flutter in your stomach. When you take those neuron signals as a whole, they create a gestalt that thinks and feels and experiences and is conscious. When you take those little bits of refracting light as a whole, you get a beautiful arc of many colors resting across the sky. When you take all those zeroes and ones together, you get letters, words, sentences, communication between people far distant from one another.
You can reduce something down into its constituent parts, but that doesn't somehow invalidate the larger whole.