2463935
Descripción
Test por Jamie Caffey, actualizado hace más de 1 año
|
Creado por Jamie Caffey
hace más de 9 años
|
|
Pregunta 1
Pregunta
In the 19th century, did scientists know the structure of atoms?
Respuesta
- True
- False
Pregunta 2
Pregunta
In 1863, Newlands proposed his...
Respuesta
-
Law of octaves
-
Theory of evolution
-
Law of structures
Pregunta 3
Pregunta
What did the law of octaves state?
Respuesta
-
8 keys in a piano is an octave
-
Similar properties are repeated every 8th element
-
8 elements are a group
Pregunta 4
Pregunta
Why was Mendeleev's periodic table better than Newlands?
Respuesta
-
He left gaps for undiscovered elements
-
He discovered the missing elements
-
He discovered the structure of an atom
Pregunta 5
Pregunta
Elements are arranged in the periodic table in order of their atomic numbers
Respuesta
- True
- False
Pregunta 6
Pregunta
Why do elements in the same group have similar chemical properties?
Respuesta
-
They follow Newlands law of octaves
-
Their atoms have the same number of electrons in their outer shell
Pregunta 7
Pregunta
When metals react they lose electrons so...
Respuesta
-
The reactivity of metals in a group increases going down the group
-
The reactivity of metals in a group decreases going down the group
Pregunta 8
Pregunta
When non-metals react they gain electrons so the reactivity of non-metals decreases going down the group
Respuesta
- True
- False
Pregunta 9
Pregunta
Group 1 elements are called the...
Respuesta
-
Acid metals
-
Alkali metals
Pregunta 10
Pregunta
They react readily with...
Respuesta
-
Air and water
-
hydrogen
Pregunta 11
Pregunta
Alkali metals have low melting and boiling points that decrease going down the group
Respuesta
- True
- False
Pregunta 12
Pregunta
Alkali metals react with water to produce hydrogen gas and...
Respuesta
-
Oxygen
-
A metal hydroxide
Pregunta 13
Pregunta
Group 1 metals form ionic compounds in reactions
Respuesta
- True
- False
Pregunta 14
Pregunta
Why does reactivity increase going down group 1?
Respuesta
-
The outer electron is less strongly attracted to the nucleus as the number of shells increase and the atoms get larger
-
The outer electron is more strongly attracted to the nucleus as the number of shells increase and the atoms get larger
Pregunta 15
Pregunta
Transistion elements are...
Respuesta
-
Bad conductors of heat
-
Malleable, ductile and good conductors of heat
-
Not malleable and hard to bend
Pregunta 16
Pregunta
Do transition elements react slowly or quickly with oxygen and water?
Respuesta
-
Quickly
-
Slowly
Pregunta 17
Pregunta
Are transition elements useful as building materials?
Respuesta
-
No because they are weak
-
Yes because they are strong and dense
Pregunta 18
Pregunta
Compounds of transition elements are...
Respuesta
-
Dull colours
-
Brightly coloured
Pregunta 19
Pregunta
Transition elements form positive ions
Respuesta
- True
- False
Pregunta 20
Pregunta
Which group are the halogens?
Respuesta
-
Group 1
-
Group 4
-
Group 7
Pregunta 21
Pregunta
Fill in the gap: Fluorine is a ........................................... at room temperature
Respuesta
-
Pale yellow gas
-
Yellow solid
Pregunta 22
Pregunta
Chlorine is a green gas at room temperature
Respuesta
- True
- False
Pregunta 23
Pregunta
Bromine is a green liquid at room temperature
Respuesta
- True
- False
Pregunta 24
Pregunta
Iodine is a grey solid at room temperature that easily vapourises to a violet gas
Respuesta
- True
- False
Pregunta 25
Pregunta
How do halogens bond with metals and non-metals?
Respuesta
-
Metals: Form an ionic compound Non-metals: Bond covalently to form molecules
-
Metals: They don't bond with Non-metals: Form an ionic compound
Pregunta 26
Pregunta
Why does the reactivity of the halogens decrease going down group 7?
Respuesta
-
The attraction of the outer electrons to the nucleus increases as the number of occupied shells increase
-
The attraction of the outer electrons to the nucleus decreases as the number of occupied shells increase
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.