Question

. Which particles have almost the same mass?
(1 point)proton and electron

proton and neutron

electron and neutron

all three particles


2. Which item best represents Thomson’s mental image of an atom?
(1 point)a sponge

a chocolate-chip cookie

a frisbee

a potato chip


3. A transmutation involving the release of alpha particles that produces atoms with an atomic number has ____.
(1 point)decreased by two

increased by two

decreased by one

increased by one




Figure 15-1

4. When Mendeleyev published his periodic table, there were some spaces

Answer 1

electron is lighter than proton and neutron

Answer 2

how many questions does it say are up there

Answer 3

3 and a half

Answer 4

@Turkey_Sausage Please don't use inappropriate language/signs here

Answer 5

proton and neutron, almost the same.
and chocolate-chip cookie for the Thomson's mental image of an atom, since it looks like the plum pudding

Answer 6

and decreased by two for the third question.

Answer 7

yes proton and neutron have almost the same mass...

Answer 8

Alpha particles consist of two protons and two neutrons bound together so the nucleus should lose 2 protons and 2 neutrons...