Atoms Elements Compounds Mixtures

subatomic particle with a POSITIVE charge, found inside the nucleus

• electron

• neutron

• proton

• electron cloud

subatomic particle with a NEGATIVE charge, found outside the nucleus in the electron cloud

• proton

• electron

• neutron

• element

subatomic particle with NO charge, found inside the nucleus

• proton

• neutron

• electron

• mixture

center of an atom, made up of protons and neutrons

• element

• nucleus

• proton

• electron cloud

total mass of protons + neutrons in an atom, measured in Atomic Mass Units (AMU)

• atomic mass

• atomic number

• energy level

• mixture

two or more substances that have been PHYSICALLY combined (ex: salt water is H2O mixed with NaCl)

• element

• compound

• mixture

• neutron

mixture that looks the SAME throughout (ex: iced tea)

• element

• compound

• homogeneous mixture

• heterogeneous mixture

mixture that appears DIFFERENT throughout; can be physically separated (ex: trail mix)

• element

• compound

• homogeneous mixture

• heterogeneous mixture

place in electron cloud where an electron is most likely to be found

• nucleus

• atomic mass

• energy level

• atom

What is an element made of?

• One kind of atom

• Two or more kinds of atoms

• A mixture of elements

• None of the above

Tags

NGSS.MS-PS1-1