The Structure of Matter S8P1

What is an example of a mixture?

• water

• hydrogen gas

• a blueberry muffin

• a spoon made of the element silver

Which of the following is an example of a pure substance?

• a sample of oxygen gas

• a solution of sugar water

• a mixture of pasta and sauce

• an alloy of iron and carbon

Tags

NGSS.MS-PS1-4

• an atom

• a compound

• an element

• a mixture

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NGSS.MS-PS1-1

An unknown substance is provided in a science class. It consists of particles that are of different colors and different sizes. The particles are unevenly distributed throughout the substance. The substance is...

• an element

• a compound

• a homogenous mixture

• a heterogeneous mixture

This particle is most likely

• an atom

• a molecule

• a homogeneous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

Which are the name and atomic number for the element?

• K and 19

• K and 39.098

• Potassium and 19

• Potassium and 39.098

An atom of this element has how many protons?

• 18

• 19

• 39

• 58

Tags

NGSS.MS-PS1-1

Which of the following could be the chemical symbol representing the element cobalt?

• co

• Co

• CO

• Cob

The model shows a neutral atom. How many protons are in the atom?

• 2

• 4

• 5

• 9

Tags

NGSS.MS-PS1-1

In which period, or row, of the periodic table would you find this element?

• Period 2

• Period 4

• Period 5

• Period 7

Tags

NGSS.MS-PS1-1