How is an electrical impulse in one neurone able to pass to the next ?

Due to the absence of a membrane between two neurones, they cannot communicate using electrical impulses. Instead, the electrical signal reaches the end of the pre-synaptic neurone, where it is converted to a chemical signal in the form of neurotransmitters. These neurotransmitters are released from the pre-synaptic neurone into the synapse, where they diffuse across to the post-synaptic neurone. Here, the neurotransmitters activate an electrical signal in the post-synaptic neurone, allowing the neuronal communication to continue.