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Help the slightly unhinged scientist complete his lab report by choosing the correct verb forms.
According to my latest findings, the reaction is completely predictable. If my assistant _________________________ the synthetic slime to exactly 100 degrees, it always _________________________ and covers the entire ceiling in green goo.
The correct answers are heats and explodes.
This sentence uses the Zero Conditional, which describes general truths, scientific facts, or habits.
The structure is: If + present simple, present simple.
The word "always" strongly indicates that this is a recurring fact, not a one-time future event. Also, remember that we do not use "will" in the "if" clause of zero and first conditionals!