Atoms, Ions, Isotopes

Anything that has mass and takes up space is _______

• matter

• atoms

• cells

• stuff

Tags

NGSS.MS-PS1-1

What is the smallest part of an element that retains the chemical identity of the element?

• matter

• protons

• cells

• atoms

Tags

NGSS.MS-PS1-1

What is the nucleus?

• made up of protons and neutrons

• made up of protons and electrons

• made up of electrons and neutrons

Tags

NGSS.MS-PS1-1

A particle has mass = 1amu & charge = +1 is ___________.

• neutron

• proton

• electron

Tags

NGSS.MS-PS1-1

A particle has mass = 1amu & charge = 0 is ___________.

• neutron

• proton

• electron

Tags

NGSS.MS-PS1-1

A particle has mass = 0 amu & charge = -1 is ___________.

• neutron

• proton

• electron

Tags

NGSS.MS-PS1-1

protons + neutrons

• mass number

• atomic number

• charge number

• isotope number

Tags

NGSS.MS-PS1-1

If you know the atomic number, what TWO things do you know?

• number of protons

• identity of element

• number of neutrons

• charge of atom

Tags

NGSS.MS-PS1-1

What holds atoms together (TWO answers are correct)?

• Attractions between the positive nucleus (because of the protons within) and negative electrons (outside of the nucleus)

• The nucleus contains neutrons that act as spacers between the protons (that have a positive charge)

• The nucleus contains neutrons that act as spacers between the electrons (that have a negative charge)

• Attractions between the negative nucleus (because of the electrons within) and positive protons (outside of the nucleus)

Tags

NGSS.MS-PS1-1

Which atoms have this: # of protons = # of electrons?

• neutral

• ions