Bristol, City of Bristol College
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In depth analysis of various ground improvement techniques including different examples. 
 
The principal methods when constructing basements, and the influencing factors.
A-level 
CHEMISTRY 
7405/1 
Paper 1 Inorganic and Physical Chemistry 
Mark scheme 
June 2021. MARK SCHEME – A-LEVEL CHEMISTRY – 7405/1 – JUNE 2021 
11 
Question Answers Additional comments/Guidelines Mark 
01.1 Heat (energy) change at constant pressure 
Ignore conditions even if wrong 
Ignore energy change 
1 
Question Answers Additional comments/Guidelines Mark 
01.2 
M2 Ca2+(g) + 2 e– + Cl 2(g) 
 M3 Ca2+(g) + 2 Cl 
– 
(g) 
M1 Ca(s) + Cl 2(g) 
Alternative M2 Ca+ 
(g) + e‒ + 2 Cl(g) ...
This business plan contains all the aspects a business should be focusing on when starting up a business. This could also qualify as a business plan guide for college students new to this topic.
In girls, what is the initial indication of puberty? 
a. Menarche 
b. Growth spurt 
c. Growth of pubic hair 
d. Breast development 
ANS: D 
In most girls, the initial indication of puberty is the appearance of breast buds, an event known 
as thelarche. The usual sequence of secondary sexual characteristic development in girls is 
breast changes, rapid increase in height and weight, growth of pubic hair, the appearance of 
axillary hair, menstruation, and abrupt deceleration of linear growth. 
PT...
In girls, what is the initial indication of puberty? 
a. Menarche 
b. Growth spurt 
c. Growth of pubic hair 
d. Breast development 
ANS: D 
In most girls, the initial indication of puberty is the appearance of breast buds, an event known 
as thelarche. The usual sequence of secondary sexual characteristic development in girls is 
breast changes, rapid increase in height and weight, growth of pubic hair, the appearance of 
axillary hair, menstruation, and abrupt deceleration of linear growth. 
PT...