Coolant container will say if it is pre-mixed or full strength. If full strenght, mix it 50/50 with water.
Pre-mixed coolant can be added "as-is"
Antifreeze keeps water from freezing when it is cold out. The antifreeze liquid lowers the freezing point of the water. Even when freezing (to a slurry) it does not form solid ice that can rupture the radiator. The antifreeze combines the water to form a liquid with a lower freezing point than water alone.
You can add antifreeze to water to prevent it from freezing.
The ratio does not change from car to car, it is always 50/50 water and anti freeze. The above answer is exactly correct, except be sure and use Distilled Water and not tap water. Do not change this mix beyond 55% Antifreeze & 45% Water. Doing so will actually raise the freezing point and lower the boiling point. Beyond this point the more antifreeze you add the less protection you have.
It lowers the freezing point.
Antifreeze can be added to a toilet to prevent freezing by mixing it with water in the tank or bowl. This helps lower the freezing point of the water, preventing it from solidifying in cold temperatures.
It changes the freezing and boiling point.
50% water and 50% antifreeze year round.
Most antifreeze has a chemical that freezes at a very lower temp than plain water.
Antifreeze has a lower freezing point than water, typically around -37 degrees Celsius (-34 degrees Fahrenheit), making it effective for preventing water from freezing in cold temperatures.
will change the boiling and freezing point of the water
It drops to about 12 degrees Fahrenheit.
You can prevent water from freezing by adding substances like salt or antifreeze to lower the freezing point, insulating the water container, or keeping it in a heated area above freezing temperature.