<human>:  When the Earth was formed, was the core molten?
<bot>: The Earth’s core is made of a mixture of molten metal and rocky material. The core is about 1,000 times as massive as the entire planet, and it is believed that the core is still hot and molten. The Earth’s outer core is made of iron, and it is thought that the core is made up of a mixture of iron, nickel, and cobalt.