Assessment 3

Question 0

What is an isotope?

Answer 0

An atom of an element with a different # of neutrons. Occurs randomly

Question 1

What is the atomic number?

Answer 1

The number of protons

Question 2

Majority metals

Answer 2

Solid at room temp., high melting point, good conductors, malleable

Question 3

What are atoms made of?

Answer 3

Particles. Protons, neutrons, electrons, energy

Question 4

Ion

Answer 4

Electrically charged atom that gained or lost electrons

Question 5

Left to right on periodic table

Answer 5

Increasing atomic mass

Question 6

Top to bottom on periodic table

Answer 6

Elements into groups with similar physical and chemical properties

Question 7

Non metals

Answer 7

Bad conductors, gas at room temp, low boiling point

Question 8

Ionic bond

Answer 8

Positive ion (cation) and negative ion (anion) combine

Question 9

Covalent bond

Answer 9

When atoms share electrons to become stable. Atoms have similar electron affinity

Question 10

Diatomic molecule

Answer 10

Two atoms of the same element combined

Question 11

Metallic bond

Answer 11

Bonding of all metal atoms. Valence es are not strongly bond

Question 12

Ionic compounds

Answer 12

Solid at room temp, will shatter, good conductor, electrolyte, high melting point

Question 13

Covalent compound

Answer 13

Liquid or gas, lower melting point, poor conductors

Question 14

Valence electrons

Answer 14

Electrons in the outermost shell in atoms. Want to obey “octet rule”

Question 15

Ionization energy

Answer 15

The energy used to remove an electron from an atom. Increases left to right on periodic table

Question 16

Quark

Answer 16

Subatomic particle that carries a fractional electric charge

Question 17

Modern view of atoms

Answer 17

Quantum mechanics. Electrons occupy a region which space is described with math equations

Question 18

Mass number

Answer 18

Protons+electrons. *not the same as atomic mass

Question 19

How is atomic mass found?

Answer 19

The average mass of all isotopes that are measured and then multiplied by % found in nature

Question 20

Electron dot diagram (Lewis structure)

Answer 20

Shows # valence electrons and can help determine how reactive or what kind of bond will occur with the element

Question 21

Molecule

Answer 21

Two or more atoms combined. Pure substance. Can both be same element

Question 22

Compound

Answer 22

Type of molecule where 2 or more atoms of different elements combine

Question 23

Accelerators

Answer 23

Take a particle and speeds it up using electromagnetic fields and bashes particles into a target or another atom. At collision point detectors record how many pieces