Physical Science Pre-test

The atomic number on a periodic table always gives the number of ___.

• protons only
• neutrons only
• protons and electrons
• electrons only

Which describes one way heat is flowing in this system? 

• From the water to the air.
• From the air to the ice cube. 
•  From the plate to the air.
• From the ice cube to the plate.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which type of waves can travel through a vacuum?

• Sound only
• Light only
• Light and Sound
• Neither Light nor Sound

Most elements are what ___.

• gases
• metals
• metalloids

How do you find the number of electrons a neutrally charged atom of an element has?

• atomic number
• rounded average atomic mass
• rounded average atomic mass minus atomic number
• sum of protons and neutrons

What tool do we use to measure mass?

• graduated cylinder
• spring scale
• ruler
• balance

A milk shake is a(n) ___.

• mixture
• compound
• element
• pure substance

A chemical bond that occurs when atoms share electrons is a(n) _____ bond.

• covalent
• ionic 
• James
• nuclear

According to the law of conservation of energy, the total amount of energy in the universe ____.

• remains constant
• changes constantly
• increases
• decreases

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-3

NGSS.MS-PS3-5

How many atoms of nitrogen are in the following molecule:
C₇H₅(NO₂)₃

• 1
• 4
• 3
• 6