What part of Atomic Theory did Thompson discover?

Atoms are made of negative & positive charges to cancel out

What is the Atomic Number?

The number of protons in an atom.

Atoms with same number protons & different number neutrons

The average of mass numbers of an element‘s isotopes

What do we use half-lives for?

Dating the age of a sample of Matter.

Why are Alkali Metals not found as pure substances in nature?

They are very reactive and chemically combine with others.

Show the steps of chemical reactions.

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Atoms and Periodic Table

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A #science quiz about #periodictable and #atoms

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Questions 30

Answers

1
What is true about a column on the Periodic Table?
All of the above
All the elements share similar properties.
Atomic number increases as you move down the column.
They are called Groups.
2
What is the basic particle from which all matter is made?
Compound
Atom
Molecule
Element
3
What group loses electrons during chemical reactions?
Metalloids
Nonmetals
All elements
Metals
4
What part of Atomic Theory did Thompson discover?
Electrons circle the nucleus in a cloud.
A solid nucleus made of ONLY protons
Atoms are made of negative & positive charges to cancel out
Electrons circle the nucleus like planets orbit the sun
5
What is the MOST reactive group of metals?
Halogens
Alkali Metals
Noble Gases
Alkaline Earth Metals
6
What is the Atomic Number?
The average of mass numbers for all element isotopes
The sum of protons and neutrons in a nucleus.
The number of protons in an atom.
The number of electrons In an atom.
7
Which process turns thorium-234 to protactinium-234?
Corrosion
Beta decay
Gamma radiation
Alpha decay
8
What elements do not normally react with other elements?
Alkali Metals
Transition Metals
Noble Gases
Halogens
9
What is a negatively charged particle circling the nucleus?
Proton
Nucleus
Neutron
Electron
10
Alpha particles resemble what?
A hydrogen nucleus
An X-ray wave
An electron
A helium nucleus
11
What is an isotope?
A particle made of two protons and two neutrons
Radioactive nucleus that emit gamma rays
A molecule made of two atoms of the same element
Atoms with same number protons & different number neutrons
12
Which element is necessary for all life on Earth, and provides fuel for most processes?
Hydrogen
Flourine
Carbon
Oxygen
13
What is NOT a property of metals?
Electrical conductivity
Brittle
Ductile
Malleable
14
What increases as you move from left to right across the Periodic Table?
Radoiactivity
Atomic Number
Melting point
Reactivity
15
Which group of metals is good for use in jewelry and industrial processes?
Alkaline Earth Metals
Alkali Metals
Transition Metals
Lanthanide Series
16
Atomic mass is—
The sum of protons and neutrons in a nucleus.
The average of mass numbers of an element‘s isotopes
The number of protons in an atom.
The number of electrons in an atom.
17
What do we use half-lives for?
As Fuel for power plants.
Dating the age of a sample of Matter.
Tracing the steps in a chemical reaction.
Destroy cancer cells.
18
What is a property of metalloids?
Malleable
Highly reactive
Brittle
Ductile
19
What element is the most abundant in the universe, and makes up stars?
Hydrogen
Flourine
Oxygen
Carbon
20
What is the deterioration of metal due to chemical reaction in the environment?
Radioactivity
Reactivity
Thermal Conductivity
Corrosion
21
What is the ability to be hammered into flat sheets or other shapes?
Malleable
Luster
Thermal conductivity
Ductile
22
Which group are used as semiconductors?
None of the above
Metals
Metalloids
Nonmetals
23
Why are Alkali Metals not found as pure substances in nature?
They are very reactive and chemically combine with others.
They don’t react with other substances, so stay compounds
They are too soft to survive as pure substances.
They are radioactive and break down in nature.
24
What is a gamma ray?
A positively charged particle
High energy waves
A fast moving electron.
Two protons and two neutrons
25
Who discovered the atom has a dense, positive nucleus surrounded by mostly empty space?
Rutherford
Dalton
Bohrs
Thompson
26
What do tracers do?
Show the steps of chemical reactions.
Help scientists date samples of Matter.
Provide fuel for power plants
Power fireworks
27
What are the MOST reactive Nonmetals?
Halogens
Noble Gases
Alkaline Earth Metals
Alkali Metals
28
Beta particle resembles—
A hydrogen nucleus
A helium nucleus
An X-ray wave
An electron
29
What is an example of corrosion?
Melting
Alpha decay
Beta decay
Rusting
30
What is the arrangement of elements in a chart to show the repeating pattern of properties?
Radioactive Elements
Isotopes
Atomic Theory
The Periodic Table

Atoms and Periodic Table Flashcards | StudBud