Atoms Molecules Compounds

How would H2O be classified? Check all that apply.

• Atom

• Molecule

• Compound

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NGSS.MS-PS1-1

How many valence electrons ae in the element Carbon?

• 2 electrons

• 6 electrons

• 4 electrons

• None of the above

Tags

NGSS.MS-PS1-1

What is an ion?

• An atom that has gained or lost an electron.

• An atom that has gained or lost a neutron.

• An atom that has gained or lost a proton.

• An atom that is electrically neutral.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

What subatomic particle changes in an ion?

• The number of electrons

• The number of protons

• The number of neutrons

Small positively charged particles that are found in the nucleus of an atom

• neutron

• ion

• proton

• electron

What is the picture displayed?

• atom

• element

• compound

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms are in Water (H2O)

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What term is used for the joining of atoms to form new substances?

• valence electrons

• physical bonding

• energy level

• chemical bonding

Which of these items is made up of one or more molecules?

• Gold

• Hydrogen

• Salt 

• Neon 

Tags

NGSS.MS-PS1-1