Matter and Reactions
the smallest pieces of matter are called ___
what are atoms?
the inner part of an atom that contains the proton and the neutron is called the ____.
what is nucleus?
Atomic numbers of an atom are the same as the number of what in an atom?
what are protons?
This is a chart which organizes the chemical elements.
The periodic table
GET A PENCIL AND PAPER. draw an energy level model.
show teacher.
This is anything that takes up space.
what is matter?
These particles have a positive charge and are found inside the nucleus.
what are protons?
Carbon's atomic number is ___
what is 6?
Number of protons in the nucleus.
what is the atomic number?
which element has a larger atomic number Au or Fr?
Fr
physical or chemical change?
cutting a piece of paper
what is physical change?
These particles are located within the nucleus, and have no charge.
what is neutron?
What element has a number of 56?
what is barium?
The sum of the number of protons plus neutrons in the nucleus.
what is the atomic mass?
The air we breath out is called ____.
carbon dioxide
physical or chemical change?
ice cream melting
what is physical change?
These particles are negatively charge and are found outside the nucleus.
what are electrons?
Why does hydrogen have an atomic number of 1?
because it only has one proton
Columns or multiple columns in the periodic table.
what is a group?
I have an atomic number of 54
xe
physical or chemical change?
the wood is burning
what is chemical change?
Most of the mass of an atom is located here.
what is nucleus?
Some atoms have more _______, which makes it an isotope and gives it a negative charge.
what is electrons?
Beryllium, Magnesium, Calcium, Strontium, Barium, Radium.
Bones in an human body need _____. (its an element on the periodic table.)
calcium