The Nature Of Matter

Question 1

Atoms (1)

Answer 1

The smallest unit of all things seen or unseen, are all made up of atoms.

Question 2

Atom (2)

Answer 2

Is the basic unit of matter.

Question 3

Subatomic particles

Answer 3

Electron -

Proton +

Neutron o

Question 4

Electrons (1)

Answer 4

They never rest or die. Always in constant motion.

Question 5

Electrons (2)

Answer 5

Their are always at least two orbitals

Question 6

Electrons (3)

Answer 6

• There is nothing on this earth that can detect a single electron.
• Electrons have a small mass. Like they have no weight.

Question 7

Chemical Element

Answer 7

A pure substance that consists of entirely one atom.

Question 8

Isotopes (1)

Answer 8

Are atoms of the same element, that differ in the number of neutrons.

Question 9

Isotopes (2)

Answer 9

Identified in their mass number, the total number of neutrons and protons in their nucleus.

Question 10

Chemical Compound

Answer 10

Is a stable substance formed by chemical combinations of two or more elements in a definite proportions .

Question 11

Chemical Compounds (2)

Answer 11

The physical and chemical properties of a compound are different from the elements from which they are derived.

Question 12

How do scientist show the ratio of elements in a compound?

Answer 12

Scientists use formulas to show the ratio of elements in a compound.

Question 13

Chemical Bonds

Answer 13

The atoms in compounds are held together by chemical bonds.

Question 14

Valence electrons

Answer 14

Electrons are available to form bonded are called valence electrons.

But you can call it the oxidation number

Question 15

Ionic bonds (1)

Answer 15

Formed between metals and nonmetals.

Question 16

Ionic bonds (2)

Answer 16

One gives away electrons the other whom accepts electrons

Question 17

Ionic bonds (2)

Answer 17

An ionic bonds form when one or more electrons are transferred from one atom to another forming an ion.

Question 18

Ionic bonds (3)

Answer 18

An atom that loses electrons becomes positively charged

An atom that gains electrons becomes negatively charged.

Question 19

Covalent bonds

Answer 19

When two or more atoms share electrons.

Question 20

Covalent (2)

Answer 20

Nonmetals usually form covalent bonds

Question 21

Covalent bonds (3)

Answer 21

Covalent bonds are form by

Question 22

Van der waals forces

Answer 22

When molecules are close together a slight attraction can form between oppositely charged portions of nearby molecules. These intermolecular forces are called van der waals forces.