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Topic 1 Structure of the atom and the Periodic Table

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

1 What A is all matter made of?

Back (Answer)

atoms

#2
Front (Question)

3 How did Dalton describe atoms?

Back (Answer)

tiny indestructible spheres

#3
Front (Question)

5 What is the difference between an atom and a molecule?

Back (Answer)

molecules contain two or more atoms chemically joined together in a group

#4
Front (Question)

9 Name the particles are found in an atom?

Back (Answer)

protons, neutrons and electrons

#5
Front (Question)

10 What is the nucleus of an atom?

Back (Answer)

tiny central part of an atom made up of protons and neutrons

#6
Front (Question)

14 How are electrons arranged in an atom?

Back (Answer)

circling/orbiting the nucleus in regions called shells

#7
Front (Question)

15 How do protons and electrons compare in terms of relative charge?

Back (Answer)

protons have a positive (+1) charge and electrons have a negative (-1) charge

#8
Front (Question)

16 Why are most atoms neutral?

Back (Answer)

they have the same number of protons and electrons and so equal positive and negative charges

#9
Front (Question)

18 How does the size of a nucleus compare to the size of the atom?

Back (Answer)

the nucleus is tiny compared to the size of the atom

#10
Front (Question)

19 How many protons are there in an atom with an atomic number of 26?

Back (Answer)

26

#11
Front (Question)

20 How many neutrons are there in an atom with an atomic number of 26 and a mass number of 56?

Back (Answer)

30

#12
Front (Question)

22 What does the atomic number of an atom tell you about its structure?

Back (Answer)

the number of protons in an atom

#13
Front (Question)

23 What does the mass number of an atom equal?

Back (Answer)

(the number of protons plus the number of neutrons

#14
Front (Question)

24 What will be the same about atoms of the same element?

Back (Answer)

(they will have the same atomic number and same number of protons

#15
Front (Question)

25 Where is most of the mass of an atom found?

Back (Answer)

in the nucleus

#16
Front (Question)

26 Which subatomic particles in an atom have negligible mass?

Back (Answer)

electrons

#17
Front (Question)

28 How many protons, neutrons and electrons are in an atom that has an atomic number of 13 and a mass number of 27?

Back (Answer)

13 protons, 14 neutrons, 13 electrons

#18
Front (Question)

29 What are isotopes?

Back (Answer)

(atoms with the same atomic number but different mass numbers)

#19
Front (Question)

31 Which element has the chemical symbol O?

Back (Answer)

(oxygen)

#20
Front (Question)

32 What is the chemical symbol for carbon?

Back (Answer)

(C)

#21
Front (Question)

33 Which element has the chemical symbol Mg?

Back (Answer)

(magnesium)

#22
Front (Question)

34 What is the chemical symbol for sodium?

Back (Answer)

(Na)

#23
Front (Question)

35 Which type of substance is found in the periodic table - elements, compounds or mixtures?

Back (Answer)

(elements)

#24
Front (Question)

36 What is a vertical column in the periodic table called?

Back (Answer)

(group)