How Atoms Differ

What is the charge of a proton?

• positive

• negative

• neutral

What is the charge of an electron?

• positive

• negative

• neutral

Tags

NGSS.MS-PS2-3

What is the charge of a neutron?

• positive

• negative

• neutral

What part of an atom determines the element that it belongs to?

• proton

• neutron

• electron

• atomic mass

Mass Number = __________

• protons + electrons

• neutrons + electrons

• protons + neutrons

• protons - neutrons

Atoms of the same element can have different mass numbers?

• true

• false

If an atom has a positive or negative charge we call it a(an) ____.

• excited atom

• isotope

• positive/negative atom

• ion

An atom is neutral because the number of protons is equal to the number of _____.

• protons

• neutrons

• electrons

• ions

An atom that has 5 protons and 5 electrons gains an electron. What is the charge of this ion?

• +2

• +1

• 0

• -1

• -2

Particles with different numbers of protons are different ______.

• ions

• isotopes

• elements