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