Science
Which is the smallest particle listed
A quark
What is the difference between an element and a chemical compound
An element consists of only one type of atom
If two protons are removed from an oxygen nucleus the result is
Carbon
Chemical and physical changes are similar to that they both involve
Changes in physical attributes
Turns into a white powder when heated in the presence of oxygen
Chemical
An atom has
Gold
Which has the greatest number of protons in its nucleus
Lead
The reason a granite block is mostly empty space is because the atoms in the granite are
Mostly empty space themselves
If two protons are added to an oxygen nucleus the result
Neon
Which of the following are electrically neutral
Neutron
To say a chemical equation is balanced means the
Number of times each element appears as a reactant is equal to the same number of times it appears as a product
A solid is not considered fluid because
Of the fixed arrangement of its atoms or molecules
During a chemical reaction
Old atoms stick around merely switching partners
In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
Orbital electrons
Can be made into thin sheets
Physical
One element is distinguished from another by the number of
Protons
If an element of atomic number 118 is ever synthesized it would be
Radioactive chemically inert a gas at room temp.
Brownian nation has to do with the
Random motion of atoms ad molecules
How is a physical change different from a chemical change
The chemical identity of a substance is not altered during a physical change
What makes an element distinct
The number of protons
The purpose of coefficients in chemical equations is to make
The number of times each element appears as a reactant and a product
Gases are so much easier to squeeze into smaller volume than liquids or solid because
There is so much space in between the submicroscopic particles
How many different elements are in a water molecule
Two
Compared to the mass of a hydrogen atom the mass of an oxygen atom is
16 times greater
What is the total number of protons and neutrons In A water molecule
18
How many protons should be added to the nuclei of oxygen atoms so the resulting gas will glow red when electric currant flows
2
Which type of solid would have the greatest tendency to shatter upon impact with human
A non metal
Nuclei of atoms in new born baby's we're made in
Ancient stars
If we doubled the magnifying power of the most powerful optical microscope in the world, we would
Not be able to see an atom
When two different elements combine to form a compound the resulting properties of the compound are
Not necessarily anything like those of the elements
How does a solid differ from a liquid phase on the molecule level
The molecules of a solid are fixed, while the molecules of a liquid are mobile
Which of these atoms have the most mass
Uranium