Q2 8th Science Review

The atomic number for Fluorine 9, an atomic mass of 19. What is the number of neutrons?

• 9

• 10

• 18

Tags

NGSS.MS-PS1-1

What correctly describes the structure of an atom?

• electrons and neutrons are in the nucleus and protons orbit around it

• there is no nucleus and they all 3 orbit freely

• Protons, neutrons, and electrons are all in the nucleus

• protons and neutrons are in the nucleus and electrons orbit around it

Tags

NGSS.MS-PS1-1

Elements in the same column (top to bottom) have similar

• atomic numbers

• energy levels

• properties

• atomic mass

The zig zag line on the periodic table (in yellow) are known as metalloids. What are metalloids?

• Elements that are metals

• Elements that have properties of both metals and nonmetals

• Elements that ar nonmetals

• Elements that are solid, liquids, and gases

Elements share similar chemical properties when they are in the same

• group (top to bottom)

• period (left to right)

The atomic number for Chlorine is 17, an atomic mass of 35. What is the number of protons?

• 36

• 35

• 17

Tags

NGSS.MS-PS1-1

If a proton is added to an element then it will

• lose electrons

• have a negative charge

• change the element to another element

• it will have a smaller atomic number

Tags

NGSS.MS-PS1-1

The atomic number for Beryllium is 4, an atomic mass of 9. What is the number of electrons?

• 4

• 9

• 10

Tags

NGSS.MS-PS1-1

These are all examples of

• mixtures

• compounds

• elements

Tags

NGSS.MS-PS1-1

These are examples of

• mixtures

• elements

• compounds

Tags

NGSS.MS-PS1-1