2024 chemistry midterm review

what should you do if you get acid on your hands?

• wash hands for five minutes

• wipe on your clothes

• wash your hands for 10 to 15 minutes

what do isotopes are the same element having common and what is different

• The protons are the same, and the mass changes

• electrons are the same and valence electrons change

Tags

NGSS.HS-PS1-8

explain how Rutherfords gold foil experiment worked and what it proved

• The nucleus exist and an atom is mostly empty. Space.

• protons exist and electrons are in the electron cloud

the subatomic particle What subatomic particle determines the identity of a atom

• the proton

• neutron

• electron

• nucleus

how do you find protons, electrons, and neutrons

• protons=atomic number

  electrons=protons unless it’s a ion

  neutrons=mass minus atomic number

• protons=mass minus atomic number

  electrons=protons unless it’s a ion

  neutrons=atomic number

• protons=mass minus atomic number

  electrons=atomic number

  neutrons=same as protons unless it’s a ion

The horizontal rose found on the periodic table are called _____, while the vertical columns are called _______ or _______

the most reactive elements on the periodic table is ______

• alkali metals

• halogens

• flourine

• nitrgron

electronegativity _______ going down groups and ______ going across periods from left to right

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

ionization energy _______ going down groups and ______ going across periods from left to right

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

atomic radius _______ going down groups and _______ going across periods from left to right