Cards in this guide (11)
What is the photoelectric effect
Apexvs.
Electrons are knocked off atoms, causing electricity to
flow.
How many elements were there in 1860
63 elements had been discovered so far.
What is a reason an engineer may choose to use a prefabricated building component
She wants to use standard materials to minimize negtive
environmental impacts
What law states that energy is never created or destroyed
The law of conservation of energy
What does adding a neutron to an atoms nucleus do to the atoms mass
Are elements arranged in in a periodic table or an element table
The elements are arranged in a periodic table. Refer to the related
link for a printable periodic table.
What makes up nearly all of the atom's mass
An atom of aluminum (Al) has an atomic number of 13 and a mass number of 27. How many neutrons does it have
Chlorine (Cl) has an atomic number of 17. It often forms an ion by gaining 1 electron. What would its charge be
Na-23 has 12 neutrons what is its atomic number
An engineer chooses to use a composite material that incorporates concrete and recycled glass for the floors of a new building. This is an example of