Chemistry Semester Exam Review

This symbol indicates a _______.

• neutron

• proton

• electron

Tags

NGSS.MS-PS1-1

What information does a subscript number tell us?

• the number of atoms per element

• the number of molecules per formula

Tags

NGSS.MS-PS1-1

An electron is located ...

• in the nucleus.

• outside the nucleus.

Tags

NGSS.MS-PS1-1

What is the atomic mass for this element?

• 6

• 12.0107

• 6.0107

• 18.0107

Tags

NGSS.MS-PS1-1

The center of an atom is called

a/an __________.

• atomic mass

• nucleus

• proton center

• energy shell

How many neutrons are in an Calcium atom?

• 20

• 40.08

• 60

Tags

NGSS.MS-PS1-1

The atomic number of an element is determined by the _________ of ________ in the nucleus.

• protons, neutrons

• number, electrons

• electrons, protons

• number, protons

Tags

NGSS.MS-PS1-1

Which image shows a Bohr model for Carbon.

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

If the protons and electrons do not match, the atom is ____.

• neutral

• ion

What is a product?

• The starting substance
• The ending substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5