Review/Chemistry

Why can't you trust an atom?

• Atoms are sus

• Atoms are untrustworthy

• Atoms are liars

• They make everything up!

Which of the following is a compound?

• Mn

• HI

• O

• Pd

Tags

NGSS.MS-PS1-1

How many atoms are there in one molecule of the compound H₂O?

• 3 atoms of hydrogen and one atom of oxygen

• 2 atoms of hydrogen and zero atoms of oxygen

• 2 atoms of hydrogen and one atom of oxygen

• 3 atoms of hydrogen and two atoms of oxygen

Tags

NGSS.MS-PS1-1

Which choice correctly matches the particle with its charge?

• Proton - Positive

  Electron - Neutral

  Neutron - Negative

• Proton - Negative

  Electron - Neutral

  Neutron - Postive

• Proton - Positive

  Electron - Negative

  Neutron - Neutral

• Proton - Neutral

  Electron - Positive

  Neutron - Negative

What is the atomic mass of an element with 9 protons, 9 electrons and 10 neutrons?

• 15

• 28

• 18

• 19

Tags

NGSS.MS-PS1-1

What is the atomic number of an element with 9 protons, 9 electrons and 10 neutrons?

• 9

• 18

• 10

• 19

Tags

NGSS.MS-PS1-1

Which of the following is a chemical change?

• Burning a match

• Ice melting

• Cutting a piece of paper

• painting your fingernails

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a physical change?

• A bicycle rusting in the rain

• A match burning

• Digesting lunch

• Dissolving sugar in water

Which of the following are characteristics of metals?

• Has luster, malleable, poor conductor of heat

• Has luster, not malleable, good conductor of heat

• Has luster, malleable, good conductor of heat

• Does not show luster, malleable, good conductor of heat

Which of the following is the strongest acid?

• pH of 2

• pH of 6

• pH of 4

• pH of 7