Nature of Matter, Prop. of Water & pH Quiz Review

Imagine Lily, Maya, and Oliver are tiny scientists exploring a water molecule. They notice an attraction between the hydrogen atom they're standing on and the oxygen atom on a nearby molecule. This is an example of a ___________ bond. Can you help them identify it?

• Hydrogen

• Polymer

• Ionic

• Acidic

Tags

NGSS.MS-PS1-1

Atoms with an electric charge are called__________

• Molecules

• Electrons

• Isotopes

• Ions

Molecules that have an uneven pattern of charge (positive in one end; negative in another) are said to be ____________.

• Polar

• Ions

• Isotopes

• Electric

Answer explanation

A molecule with an uneven pattern of charge, positive at one end and negative at the other, is known as polar. This means that the molecule has a separation of positive and negative charges, creating a dipole moment. The correct choice is 'Polar'.

Tags

NGSS.HS-PS1-3

Arjun, Grace, and Hannah are having a debate. Arjun says a water molecule is made up of 2 Oxygen and 1 Hydrogen atom. Grace thinks it's 1 Hydrogen and 3 Carbon atoms. Hannah believes it's 2 Hydrogen and 1 Oxygen atom. Who is correct?

• Arjun

• Grace

• Hannah

• None of them

Tags

NGSS.MS-PS1-1

Samuel, Ava and Abigail are having a debate. Samuel thinks protons are _____, who do you think is correct?

• Neutral

• Positively Charged

• Negatively Charged

• All the Above

The 3 subatomic particles contained in every atom are:

• Protons, neutrons, electrons

• Protons, electrons, isotopes

• Photons, neurons, ions

• Photons, neutrons, ions

Tags

NGSS.MS-PS1-1

William, Anika, and Emma are having a debate about neutrons. They are discussing whether neutrons have:

• no charge

• a positive charge

• a negative charge

• All the above

Protons and neutrons can be found inside the:

• None of the above

• Nucleus

• Nucleolus

• electron shells

A compound can best be described as:

• 2 or more atoms bonding together

• 2 or more elements bonding together

• A pure substance

• A mixture

Tags

NGSS.MS-PS1-1

Luna, Michael, and Charlotte are on a space adventure and they encounter an oxygen atom. Can you help them figure out how many protons this oxygen atom has?

• 16

• 8

• 4

• 2

Answer explanation

The question asks about the number of protons in an oxygen atom. The correct answer is 8. Oxygen atoms have 8 protons. This information can be found in the periodic table. The other options are incorrect. Option 1, 16, is the total number of protons and neutrons in an oxygen atom. Option 3, 4, is the number of protons in a beryllium atom. Option 4, 2, is the number of protons in a helium atom. Therefore, the correct answer is 8.

Tags

NGSS.MS-PS1-1