Chemistry Final

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

What charge does a proton have?

• +1

• 0

• -1

• +2

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

How many protons does an aluminum atom have?

• 27

• 14

• 40

• 13

How many electrons does a sodium atom have?

• 23

• 11

• 12

• 34

Tags

NGSS.HS-PS1-1

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

The mass number of an element that has 18 protons, 18 electrons, and 22 neutrons is _____.

• 18

• 36

• 22

• 40

any characteristic of matter that you can observe without changing the identity of the substances that make it up

• physical property

• chemical property

• periodic table

• conglomerate

a characteristic of matter you observe as it reacts or changes into a different substance

• physical property

• chemical property

• periodic table

• conglomerate

Tags

NGSS.MS-PS1-2