Module 1.1 and 1.2

CHOOSE FOUR: Which of the elements listed below are in highest abundance in the human body?

• carbon
• hydrogen
• nitrogen
• oxygen
• calcium

Elements that are in very small quantities (less than 1% of the human body) but are still necessary for life are called:

• micro elements
• small elements
• trace elements
• macro elements

The smallest particles of a pure element are called:

• atoms
• molecules
• nucleus
• neutrons
• electrons

Which subatomic particles are found in the nucleus of an atom? Choose all that apply.

• electron
• proton
• neutron

If a neutral atom has 10 protons, how many electrons does it have?

• 5
• only 1
• 10

Which of the following subatomic particles determine that atom's bonding tendencies to other atoms?

• protons
• neutrons
• electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Where are electrons found within an atom?

• in the atom's nucleus
• orbiting around the nucleus of the atom in a cloud like formation with different "layers" called shells

What creates an stable atom that is unlikely/unable to bond with other atoms?

• when the number of protons equals the number of neutrons
• when the number of electrons in the outermost (valence) shell is full at 8 electrons

When 2 or more atoms bond together, they are known as

• organelles
• ions
• isotopes
• molecules

Tags

NGSS.MS-PS1-1

A polar covalent bond:

• is created when electrons are shared unequally by the atoms, creating an area within the molecule that has a more positive charge and an area that has a more negative charge
• is created when electrons are shared equally by the atoms so there is no area of positive or negative charge within the molecule

Tags

NGSS.MS-PS2-3