Share Exploring matter
Save to Folder
Which state of matter has a definite shape and volume?
SOLID
Which state of matter takes the shape of its container but has a definite volume?
Liquid
Which process describes a solid turning directly into a gas?
Freezing
Condensation
Deposition
Sublimation
What happens to the particles in a solid when it melts?
They move more slowly.
They move faster and spread out.
They stop moving.
They become closer together.
Which state of matter is easiest to compress?
GAS
Which subatomic particle has a positive charge?
Proton
Where are neutrons located in an atom?
In the nucleus
An atom with more electrons than protons is called a:
Isotope
Ion
Proton
Neutron
What is the location of electrons in an atom?
In the orbitals
What determines the atomic number of an element?
The number of electrons
The number of isotopes
The number of protons
The number of neutrons
Which subatomic particles have nearly the same mass?
Neutrons and ions
Protons and neutrons
Protons and electrons
Electrons and neutrons
What is the sum of protons and neutrons in an atom called?
Neutron number
Atomic number
Mass number
Charge
Which of these is the atomic number for Carbon?
1
12
6
8
What happens if an atom gains or loses electrons?
It becomes neutral
It becomes radioactive
It becomes an ion
It gains neutrons
If an atom has 7 protons and 7 neutrons, what is its mass number?
14
What does the atomic number represent in an element?
The number of protons and neutrons
The number of neutrons
The number of electrons in a neutral atom
The number of protons
