Atoms: & the Periodic Table Test Review

Benjamin and Grace are studying for their science exam. They come across a question: 'Which two subatomic particles contain almost ALL OF THE MASS in an atom?' Rohan, their friend, gives them three options. Which one is correct?

• protons & neutrons

• neutrons & electrons

• electrons & protons

Tags

NGSS.MS-PS1-1

Arjun is studying chemistry and he learns that the subatomic particle that identifies an element is _____.

Tags

NGSS.MS-PS1-1

During a science experiment, Luna, Benjamin, and Arjun were examining the structure of an atom. They discovered that the part of the atom with the tiniest mass is the (a)   .

• proton

• neutron

• electron

Abigail, Mia, and Oliver are studying chemistry. They learned that if they ADD the PROTONS AND NEUTRONS in an atom, they can figure out the (a)   of that atom.

• atomic number

• atomic mass (mass number)

• the charge of the atom

The ATOMIC NUMBER for an element with 4 PROTONS is _____.

Tags

NGSS.MS-PS1-1

Avery, Benjamin, and Abigail are in a chemistry class. Their teacher asks them to determine the ATOMIC MASS for a Carbon atom. What should they respond with?

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

An atom has 14 neutrons, 13 electrons, and of course some protons. What is its ATOMIC MASS?

• 13
• 15
• 27

Tags

NGSS.MS-PS1-1

Arjun, Avery, and Evelyn are working on a science project about elements. They found an element with an ATOMIC NUMBER of 29. What is the name of this element?

• silicon

• copper

• iron

METALLOIDS are _______________ . For example, some metalloids can conduct heat, but not electricity.

• poor conductors
• semiconductors
• good conductors

Avery, Samuel, and Grace are studying atoms. They learned that the center of the atom is called the _________________. Can you help them fill in the blank?

• electron cloud

• nucleus

• cell

• Option 4

Tags

NGSS.MS-PS1-1