If the temperature of this balloon were to decrease suddenly, how would the balloon change?

A. Its mass would increase.

B. Its mass would decrease.

C. Its volume would increase.

D. Its volume would decrease.

What is the number of protons in the nucleus of an element called?

2H2+O2---> 2H2O can be classified as what type of reaction? A. Both synthesis and combustion B. Only synthesis C. Only combustion D. Something other than synthesis or combustion

A basic observation of a star is how bright it appears. This brightness is known as the star's A. luminosity. B. absent magnitude. C. apparent magnitude. D. absolute magnitude.

What happens when a star comes to an end? A. It can become a Sun. B. It can become a black hole. C. It can become a whirlpool. D. It can just disappear.

What is the difference between heat and temperature?

Matt plays badminton. He serves the birdie with a velocity of 4.25 m/s [right] covering a displacement of 5.2 m [forward]. How much time does this birdie's trip take? show your work below

A Roller Derby Exhibition recently came to town. They packed the gym for two consecutive weekend nights at South's field house.

A train is 240 meters long and travels 20 m/s. How long does it take to cross a 360-meter long bridge? S

When polarizing an object, what happens to the charges in the object? A. They swirl about like bees in a hive. B. They separate, with positive charges on one side and negative charges on the other. C.

Hailey is preparing a debate on the benefits of using synthetic polymers over natural polymers, and she wants to create a list to get started. Which should she include in her list? Check all that apply. Synthetic polymers are biodegradable.