What's the gas the humans need to breathe?
Oxygen.
"Complete: If you heat ice, it ________."
Melts.
"If it rains, the plants ________ (get) water."
Will get.
What do we call it when you mix things to see what happens?
An experiment.
"Complete: If the temperature is 100°C, water ________."
Boils.
"If we don't recycle, the ocean ________ (be) dirty."
Will be.
What is the invisible force that pulls us to the ground?
Gravity.
"Complete: If you mix blue and yellow, you ________ green."
Get/Make
"If scientists study hard, they ________ (find) a cure."
Will find.
"When water turns into ice, it reaches its _______ point."
Freezing.
"Complete: If there is no oxygen, a fire ________."
Goes out/Dies.
"If we travel to the Moon, the gravity ________ (be) weak."
Will be.
"When two chemicals meet and change, it is a ________."
Chemical Reaction.
"Complete: If you drop a ball, it ________ to the floor."
Falls.
"If we protect the bees, the flowers ________ (not/die)."
Won't die/Will not die.