PHYSICS FINAL CH2

Nuclei of atoms that make up a newborn baby were made in?

ancient stars

Solid matter is mostly empty space. The same reason solids don't fall through one another is because of?

electrical forces

The chemical properties of matter come mostly from its?

electrons

The volume of matter comes mostly from its?

electrons

The air in the room has?

energy, mass, weight

When carbon and oxygen atoms combine, energy is?

given off by the reaction

If one neutron is added to a helium nucleus, the result is?

helium

Which of the following are electrically neutral?

neutron

Atoms heavier than hydrogen were made by?

nuclear fusion

The weight of matter comes from mostly its?

protons and neutrons

The smallest particle of those listed below is?

quark

Brownian motion has to do with the?

random motions of atoms and molecules

In our part of the universe, antimatter is?

short-lived

If we doubles the magnifying glass power of the most powerful optical microscope in the world, we would?

still not be able to see or photograph an atom

A factor that usually determines whether a substance is in the solid, liquid, gaseous, or plasma state is its?

temperature

What makes an element distinct?

the number of protons

Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy given off when they recombine is?

the same

There are about as many atoms in our lungs at any moment as there are breaths of air in the atmosphere of?`

the whole world

How many different elements are there in a water molecule?

two