Why are elements in groups 1 and 8 highly reactive?

Because they loose/gain 1 valence electron

Because they don't bond with other elements

Because they have 8 valence electrons and are stable

The atomic number tells you what?

both electrons and protons in an atom.

Which statement is true of ionic compounds?

They are formed of metals and nonmetals bonded together

They are electrically neutral when dissolved in water

They are good conductors as solids

They are made by sharing electrons

The electrons involved in the formation of a covalent bond are

only found in the inner most orbital

How are covalent bonds explained?

When the atom shares an electron with an another atom

When one atom takes the other atom's electron

When the neutrons leave the nucleus

As the atoms in period 3 of the periodic table are considered from left to right, the atoms generally show...

a decrease in radius and an increase in ionization energy

an increase in radius and an increase in ionization energy

an increase in radius and a decrease in ionization energy

a decrease in radius and a decrease in ionization energy

How are covalent bonds explained?

When the atom shares an electron with an another atom

When one atom takes the other atom's electron

When the neutrons leave the nucleus

What is the basis of a metallic bond?

the attraction between positive metal ions and free floating electrons.

the attraction of neutral metal atoms.

the attraction between protons and neutrons.

the attraction between positive metal ions and interlocking electrons.

Why do metals conduct

The electrons are delocalised and able to move

The electrons are held tightly within the lattice

The electrons are shared between two metal ions

As you move down the periodic table atoms get bigger. This is because ____________.

The atoms have more energy levels

Ionization energy is...

how much energy it takes to remove an electron from an atom

the energy required to add an electron to a specific atom

the energy required to shield the outer electrons from the nucleus

a measure of the ability of an atom to attract electrons

Chemistry Yr 9

Authored by Mr Lawrance

Chemistry

9th - 10th Grade

NGSS covered

Used 78+ times

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50 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did James Chadwick discover?
by Daisha

neutrons

electrons

the atomic theory

protons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who first had the idea of an atom?

Democritus

Dalton

Thomson

Rutherford

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which experiment did Rutherford perform

Gold Foil

Cathode Ray

TNT discovery

First dissection

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What contribution did John Dalton make to atomic theory?

He discovered that every atom was positively charged.

He discovered that every element consisted of one type of atom.

He discovered that atoms had nuclei.

He discovered that atoms could be divided into smaller parts.

Which scientist developed the plum pudding/chocolate chip cookie model

Dalton

Thomson

Rutherford

Democritus

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What scientist is best known for his "Plum Pudding" model of the atom?

J.J. Thomson

Ernest Rutherford

John Dalton

Democritus

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which scientist discovered the nucleus?

Bohr

Rutherford

Chadwick

Thomson

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