Periodic Table Test

Which of these is the smallest particle that still has all the properties of an element?

• an atom

• a proton

• a molecule

• an electron

Which model of an atom is correctly labeled?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?

• 82

• 125

• 207

• 289

Tags

NGSS.MS-PS1-1

Which of the analogies best describes a Bohr model of an atom?

• A Bohr model is like a bowling ball because they are both solid spheres.

• A Bohr model is like a model of the solar system because they both show orbits around a massive center.

• A Bohr model is like a string of beads because they both contain small parts that are lined up in a row.

• A Bohr model is like a jigsaw puzzle because they are both made of small parts that are all joined together.

What subatomic particles are located in the nucleus of an atom?

• both electrons and isotopes

• both neutrons and isotopes

• both neutrons and electrons

• both protons and neutrons

A sodium atom, which has 11 electrons, will have ____ electron(s) in its third energy level.

• 2

• 8

• 1

• 18

An iron atom has an atomic mass of 56. Its atomic number is 26. This means an atom of iron has _____ protons and ____ neutrons.

• 26; 56

• 26; 26

• 26; 30

• 30; 26

Tags

NGSS.MS-PS1-1

Contrast subatomic particle D with subatomic particle C.

• Particle C and D are both located in the nucleus.

• Particle C has a smaller mass than particle D.

• Particle C is more energetic than particle D.

• Particle C and particle D have opposite electrical charges.

Tags

NGSS.MS-PS1-1

The periodic table has a lot of information in the form of letters and numbers. The information is organized into boxes, which are placed in rows and stacked in columns. Which of the following does each box represent?

• a group

• a period

• an element

• a compound

In this periodic table, find the element with the average atomic mass of 87.62. What is the chemical symbol for this element?

• Rb

• Sc

• Sr

• Y

Tags

NGSS.MS-PS1-1