Homework WB 11th March

Year 9
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Slide 1: Diapositive
ScienceLower Secondary (Key Stage 3)

Cette leçon contient 24 diapositives, avec quiz interactifs et diapositive de texte.

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Year 9

Slide 1 - Diapositive

What type of bond is formed between a metal and a nonmetal?
A
Hydrogen bond
B
Ionic bond
C
Metallic bond
D
Covalent bond

Slide 2 - Quiz

In an ionic bond, electrons are transferred from the ______ to the ______.
A
Orbital, suborbital
B
Metal, nonmetal
C
Valence, core
D
Nonmetal, metal

Slide 3 - Quiz

What is the charge of an ion formed by a metal in an ionic bond?
A
Positive
B
Negative
C
Variable
D
Neutral

Slide 4 - Quiz

What type of atoms tend to form ionic bonds?
A
Noble gases
B
Metal and nonmetal
C
Nonmetal and nonmetal
D
Metal and metal

Slide 5 - Quiz

What is the term for the electrostatic attraction between oppositely charged ions in an ionic compound?
A
Ionic bond
B
Covalent bond
C
Polar bond
D
Metallic bond

Slide 6 - Quiz

What type of bonding involves the sharing of electron pairs between atoms?
A
Metallic bonding
B
Hydrogen bonding
C
Covalent bonding
D
Ionic bonding

Slide 7 - Quiz

Which of the following is a characteristic of covalent bonds?
A
They are typically found in metals.
B
They are formed between nonmetal atoms.
C
They involve the transfer of electrons.
D
They are always polar.

Slide 8 - Quiz

What is the term for a covalent bond in which the shared electrons are not equally attracted by the bonded atoms?
A
Polar covalent bond
B
Metallic bond
C
Single covalent bond
D
Nonpolar covalent bond

Slide 9 - Quiz

Which molecule exhibits a nonpolar covalent bond?
A
Ammonia (NH3)
B
Water (H2O)
C
Oxygen (O2)
D
Hydrogen chloride (HCl)

Slide 10 - Quiz

In a double covalent bond, how many pairs of electrons are shared between the bonded atoms?
A
Three pairs
B
Two pairs
C
One pair
D
Four pairs

Slide 11 - Quiz

What is the primary type of bonding in metallic elements?
A
Ionic bonding
B
Covalent bonding
C
Electron sea model
D
Hydrogen bonding

Slide 12 - Quiz

What is the property of metallic bonds that allows them to conduct electricity?
A
Covalent bonding
B
Lattice structure
C
High melting point
D
Delocalized electrons

Slide 13 - Quiz

What is the term for the attraction between metal ions and delocalized electrons?
A
Van der Waals forces
B
Metallic bonding
C
Dipole-dipole interactions
D
Hydrogen bonding

Slide 14 - Quiz

What type of crystal structure do metals generally have due to metallic bonding?
A
Close-packed structure
B
Body-centered cubic structure
C
Hexagonal close-packed structure
D
Simple cubic structure

Slide 15 - Quiz

What is the smallest unit of an element?
A
Molecule
B
Cell
C
Proton
D
Atom

Slide 16 - Quiz

What is the central part of an atom?
A
Neutron
B
Nucleus
C
Electron
D
Proton

Slide 17 - Quiz

Which subatomic particle has a positive charge?
A
Neutron
B
Molecule
C
Electron
D
Proton

Slide 18 - Quiz

What is the total number of protons and neutrons in an atom?
A
Atomic number
B
Nucleus charge
C
Atomic mass
D
Electron cloud

Slide 19 - Quiz

Which scientist proposed the atomic theory?
A
Albert Einstein
B
Marie Curie
C
John Dalton
D
Isaac Newton

Slide 20 - Quiz

Who proposed the idea of the atom?
A
Aristotle
B
Democritus
C
Einstein
D
Newton

Slide 21 - Quiz

What subatomic particle has a negative charge?
A
Photon
B
Proton
C
Electron
D
Neutron

Slide 22 - Quiz

Where is the nucleus located in an atom?
A
Top
B
Center
C
Outside
D
Bottom

Slide 23 - Quiz

What is the atomic number of an element based on?
A
Number of Neutrons
B
Number of Protons
C
Atomic Mass
D
Number of Electrons

Slide 24 - Quiz