unit 2 test stellar life cycle

anything that has volume and mass is called 

• an element
• matter 
• atoms
• plasma

a substance that can not be broken down into simpler substances by physical or chemical processes

• element
• atom
• mineral
• rock

the smallest particles of matter that retain the characteristics of an element

• atom
• mineral
• electron
• nucleus

a dense positively charged sub atomic particle

• proton
• neutron
• electron
• nucleus

particles with a density equal to a proton that does not have a charge

• proton
• neutron
• electron
• nucleus

small negatively charged particle

• proton
• neutron
• electron
• nucleus

small dense, positively charged center of an atom protons and neutrons are found here

• proton
• neutron
• electron
• nucleus

what happens to the extra matter that is left over when hydrogen is fused into helium?

• there is no extra matter
• converts to energy
• turns back into hydrogen
• is converted into beryllium

large empty space surrounding the atom, electrons are found here

• nucleus
• electron cloud
• neutron
• proton

in a star's core, electrons are stripped away from the element's atom and the nuclei are smashed together to form heavier elements.  This process is called

• nuclear fission
• nuclear fusion
• atomic power