Chemistry Questions

The following symbol matches which description?

• reactive

• strong oxidizing agent

• biohazard

• flammable

When Aluminum and Oxygen combine, the correct formula is . . .

• AlO

• Al₃O₂

• Al₂O₃

• Al₄O₃

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Salt water is an example of . . .

• A heterogeneous mixture

• A homogeneous mixture

• An element

• A compound

Which of the following is true?

• Electrons and protons have the same mass

• Electrons are a little heavier than neutrons.

• Electrons have much less mass than protons

• Protons have much more mass than neutrons

Which of the following is FALSE?

• Electrons are found outside (orbiting) the nucleus.

• Protons and Neutrons are found in the nucleus.

• Electrons have a negative charge.

• Protons are found outside (orbiting) the nucleus.

Tags

NGSS.MS-PS1-1

Where are Alkaline Earth metals found in the periodic table?

• Group 1

• Group 2

• Group17

• Group 18

Which of the following is a chemical change?

• Boiling water

• Cutting a piece of silicon in half.

• Iron rusting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the pH of something that is an acid?

• below 7

• above 7

• 7

Which of the following does NOT indicate a chemical change?

• Effervescence(bubbles)

• Colour change

• Melting

• Heat

Tags

NGSS.MS-PS1-2

Something that is TRUE about non-metals

• They are all gases.

• They do not conduct electricity.

• They are found on the left hand side of the periodic table.

Tags

NGSS.MS-PS2-3