Milestones Science Review

In a science class, Nora is examining an element under a microscope. She asks, 'What is the number of protons that this element contain?'

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

In a science class, Harper, Elijah, and Ava are learning about atomic structure. They are asked: What are the 3 particles that make up an atom?

• protons, neutrons, and isotopes

• neutrons, isotopes, and electrons

• positives, negatives, and electrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

During a science class, Aria is explaining to Isla and Aiden that electrons are

• negative and in the nucleus

• positive and at the edge of the atom

• not in an atom

• negative and outside of the nucleus

During a science class, Ava asked, 'What is gold in terms of its basic composition?' Anika replied:

• a pure substance

• a compound

• a mixture

• a molecule

In a science class, Anika is learning about atomic structure. She asks, 'Which particles in an atom are neutral and have no charge?'

• negatrons 

• electrons 

• neutrons 

• protons 

Daniel is studying chemistry and comes across an element with atomic number 6. He wonders how many protons this atom would have. Can you help him?

• 6

• 12

• 3

• cannot be determined

During a science class, Lily and Benjamin were discussing the structure of an atom. Benjamin explained that the central region of an atom where its neutrons and protons are located is called its

• nucleus

• electron cloud

• core

• center

In a chemistry class, Abigail is studying the periodic table and asks, 'Each column in the periodic table is called a what?'

• period

• group

• cluster

• unit

In a chemistry class, Scarlett is asked to identify the atomic number of the element shown in a picture. The element is

• 28

• 58.6934

• Ni

• Nickel

Tags

NGSS.MS-PS1-1

In a chemistry class, Anika looks at the periodic table and asks, 'What does the 6 represent in the entry for Carbon?'

• Atomic mass

• atomic number

• chemical symbol

• element name