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Year 9 chemistry
Flashcards
30 cards
F
Practice quiz
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Host live
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Questions
30
Answers
1
A substance made up molecules or crystal lattices with different types of atoms is...
A compound
An atom
A molecule
An element
2
The periodic table shows the mass number of elements?
False
True
3
Protons have a...
Negative charge
Positive charge
4
What is the name of the document we can use to learn about elements?
The periodic table
Table tennis
Standardised chemistry manual
The Bohr table
5
Which of the following is NOT an example of a physical property?
Its melting point
Its weight
Its size
How it reacts with other elements
6
How many electrons must nitrogen have in its second shell?
4
2
5
3
7
Why are electrons attracted to the nucleus of atoms?
Because of the opposite charges of protons and electrons
The neutrons exert a force
Because of gravity
Love is a powerful weapon
8
What is the maximum number of electrons in the second shell?
2
10
20
8
9
If the mass number of oxygen is 15 and the atomic number is 8, how many electrons must it have?
7
16
15
9
10
The periodic table shows the atomic number of elements?
True
False
11
What is a molecule?
A cluster of two or more atoms bonded together
A mix between and mole and hercules
A cluster of four or more atoms bonded together
One atom
12
Electrons have a...
Negative charge
Positive charge
13
What is a group of atoms arranged in an ordered, symmetrical, and grid-like structure?
Your mum
The periodic table
A crystal lattice
Carbon
14
An atom that has the same number of protons but different number of neutrons is?
A compound
A molecule
An isotope
Negative
15
If the mass number of zinc is 65 and its atomic number is 30, how many neutrons must it have?
30
Can't tell based on this information
35
No thanks mate
16
What is the maximum number of electrons in the first electron shell?
2
8
1
10
17
How many known elements are there any how many are found naturally on Earth?
Total= 91 Natural= 118
Total= 90 Natural = 60
No one knows
Total= 118 Natural= 91
18
The number protons is the same as the number of...
Neutrons
Electrons
19
Atoms and neutrons have a mass that is how many times greater than that of an electron?
2
2800
1800
1000
20
The number of neutrons can be found by subtracting the atomic number from the mass number.
False
True
21
Neutrons have a...
Negative charge
Positive charge
No charge
22
The periodic table shows the number of electrons?
False
True
23
If the mass number hydrogen is 1 and the atomic number is 1, how many neutrons must it have?
I said no thanks!
0
1
2
24
The mass number is the...
Total number of protons & neutrons in the nucleus of an atom
Size of the atom overall
Number of times Mr Tilak goes to Church
Total number of protons, neutrons, and electrons in an atom
25
Select the best definition of an atom
Smallest molecule that substances can be made from
Unit composed of protons and neutrons only
Smallest unit of matter that has properties of its element
Building block
26
What is an element?
A substance made from different types of atoms
A substance made up of just one type of atom
Fire, wind, water.
A substance made from a single atom
27
The atomic number is the number of protons in an atom
True
False
28
A example of crystal lattice is...
Crystal lettuce
Water
Sodium chloride
Hydrochloric acid
29
The number of electrons in each shell of an atom is known as its...
Electron tendency
Atomic number
Shell shock
Electron configuration
30
Changing the number of neutrons in an atom results in a change in...
Chemical properties
Physical properties
