Question

11,17and 20will give answer please be quick​

Answer 1

Answer:

17 answer =true , 11 answer= the scientists once thought the most fundemental building block of matter was a particle called the atom, 20answer=4:1

Answer 2

Answer:

11 = Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles. Every atom contains a central core called the nucleus, made of particles called protons and neutrons

17 = TRUE

20= 1.8