Atoms

Question 1

What is an atom

A a i a t p. A a t b b b o a m

Answer 1

An atom is a tiny particle. Atoms are the basic building blocks of all matter.

Question 2

What are elements

A e i a s t c o o t o a

Answer 2

An element is a substance that contains only one type of atom.

Question 3

What is the mass, charge change and location of protons

Answer 3

Mass: 1
Charge: Positively charged (+1)
Location: Nucleus

Question 4

What is the mass, charge change and location of neutrons

Answer 4

Mass: 1
Charge: No charge (0)
Location: Nucleus

Question 5

What is the mass, charge change and location of electrons

Answer 5

Mass: - negative
Charge: almost nothing
Location: outside the nucleus

Question 6

What is an atomic number

T a n i t n o p i t a o t e

Answer 6

The atomic number is the number of protons in the atom of that element.

Question 7

What is a mass number

T m n i t t n o p a n i a a

Answer 7

The mass number is the total number of protons and neutrons in an atom.

Question 8

Explain how electrons are arranged in atoms

Answer 8

2-8-8-2

Question 9

What is an isotope

A o s e w d n o n

Answer 9

Atoms of some element with different number of neutrons
Example- carbon12 carbon 13 carbon 14

Question 10

What are the properties of metals

G c o h a e
M
T a r t h
T a m

Answer 10

good conductors of heat and electricity
Metallic
They are resistant to heat
They are malleable.

Question 11

Explain what alloys are

A a i a s m u o 2 o m m

Answer 11

An alloy is a substance made up of two or more metals
Example: solder

Question 12

Describe how the periodic table is arranged and name groups 1 2 7 8

1 a m

2 a e m

7 n-m

8 n g

Answer 12

The chemical elements are arranged in order of increasing atomic number

Group 1 is Alkali metals

Group 2 is Alkali earth metals

Group 7 is hallogene

Group 8 is noble gases

Question 13

What are the physical properties of the alkali metals

T a m h t h t a e c, L, d, a m t a c o m

Answer 13

The alkali metals have the high thermal and electrical conductivity, lustre, ductility, and malleability that are characteristic of metals

Question 14

What are the chemical properties of the alkali metals

s, r m w L m p

Answer 14

soft, reactive metals with low melting points.

Question 15

Write a word equation for the reaction of an alkali metal with water

Answer 15

Sodium + Water •> Sodium hydroxide +
Hydrogen gas

Question 16

Why is alkali metal with water so reactive

A m a h r w w d t t a s a p i t p t

Answer 16

Alkali metals are highly reactive with water due to their atomic structure and position in the periodic table.