Atom

Question 1

Subatomic particles that do not possess any charge but provide mass to atoms are called _____.

Answer 1

neutrons

Question 2

Atoms of helium or nickel would represent _____. These are pure substances that can not be broken down into simpler materials or particles.

Answer 2

elements

Question 3

What is contained in the nucleus of an atom?

Answer 3

protons and neutrons

Question 4

A neutral atom has equal numbers of ____

and electrons.

Answer 4

protons

Question 5

What is all matter made of?

Answer 5

atoms

Question 6

Which statement(s) is/are FALSE?

Answer 6

All atoms are about the same size.

Protons and neutrons repel each other and position themselves far apart inside the atom.

Question 7

The radius of an atom is closest in size to which of the following units?

Answer 7

1 Nanometers

Question 8

Which of the following statements is true about the atoms of any element?

Answer 8

All the atoms of a given element are identical in that they have the same number of protons.

Question 9

What do all atoms of the same element have in common?

Answer 9

number of protons

Question 10

Atoms are the smallest particles in the universe.

Answer 10

False

Question 11

In a neutral atom, the number of protons is equal to the number of electrons.

Answer 11

True