3.4 Nature of Matter Test

The diagram shows a model of an atom. Who first proposed this model?

• Bohr

• Dalton

• Rutherford

• Thomson

Tags

NGSS.MS-PS1-1

The diagram shows a model of an atom. Who first proposed this model?

• Rutherford

• Dalton

• Bohr

• Thomson

Tags

NGSS.MS-PS1-1

Which two particles are always found in equal numbers in neutral atoms?

• Protons and electrons

• Protons and neutrons

• Electrons and neutrons

• Neutrons and ions

Which two particles are found in an atom's nucleus?

• Protons

• Neutrons

• Electrons

• Isotopes

Which list gives the correct numbers of subatomic particles for a neutral atom of helium?

• Two protons, two neutrons, two electrons

• Four protons, four neutrons, four electrons

• Two protons, two neutrons, four electrons

• Two protons, four neutrons, six electrons

Tags

NGSS.MS-PS1-1

How many protons and electrons does a neutral atom of beryllium have?

• Four protons, four electrons

• Two protons, two electrons

• Four protons, five electrons

• Nine protons, nine electrons

Tags

NGSS.MS-PS1-1

Which two parts are needed to make a neutral atom of nitrogen?

• A. A nucleus with seven protons and seven neutrons

• B. Electron clouds with a total of seven electrons

• C. A nucleus with three protons and four neutrons

• D. Electron clouds with a total of 14 electrons

Tags

NGSS.MS-PS1-1

The diagram shows the structure of a piece of graphite, which is a crystalline form of the element carbon.

• C

• 6C

• CO₂

• C₆H₁₂O₆

Tags

NGSS.MS-PS1-1

Oxygen gas is made of molecules like the one this model shows. Which chemical formula most likely describes oxygen gas?

• O₂

• OO

• O₁₀₀

• OG

Tags

NGSS.MS-PS1-1

Which two types of information are found in an element's box in the periodic table?

• Atomic number

• Chemical symbol

• Atomic structure

• Chemical formula