Elements, Compounds, Mixtures, pH

How would this mixture be classified?

• homogeneous mixture

• a solution

• heterogeneous mixture

• a compound

Which of the following would represent a compound?

• Model 1 (left)

• Model 2 (middle)

• Model 3 (right)

Tags

NGSS.MS-PS1-1

Which of the following statements is true of compounds?

• Compounds will have the same properties as individual atoms that bonded together to make compounds

• Compounds are mixtures of two or more different substances that are NOT chemically bonded

• Compounds are new substance with different properties from the atoms that bonded to make them

• Compounds are only created when one substance dissolves into another

Tags

NGSS.MS-PS1-5

Use the photo to identify the image with the element

• A

• B

• C

• A & B

Tags

NGSS.MS-PS1-1

Which of the following are examples of elements?

• acid, base and salt

• silicon, iron, and aluminum

• water, methane, and glucose

• proton, neutron, and electron

If a substance has a pH of 2, what statement accurately describes it?

• highly acidic

• highly basic

• slightly acidic

• slightly basic

If you mix a pH of 4 with a pH of 9, what will happen to the new pH mixture?

• pH will not be affected

• The pH of 4 and the pH of 9 will neutralize each other

• the pH will be 13

• the pH will be 5

Tags

NGSS.MS-PS1-2

Which jar contains an element?

• Jar K

• Jar L

• Jar M

• Jar N

Tags

NGSS.MS-PS1-1

What do all elements, compounds and mixtures have in common?

• the are all made of atoms

• they are all made up of pure substances

• they can all be broken down by physical changes

• they can all be found on periodic tables

Tags

NGSS.MS-PS1-1

Which substance is the solute?

• sugar

• water

• the sugar solution

Tags

NGSS.MS-PS1-2