Science Studienführer, Klassennotizen & Zusammenfassungen
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OCR 2023 GCSE Combined Science B Twenty First Century Science J260/02: Chemistry (Foundation Tier) Question Paper & Mark Scheme (Merged)
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2 
© OCR 2023 
1 The diagram shows part of Mendeleev’s Periodic Table. 
B 
11 
C 
12 
N 
14 
O 
16 
F 
19 
Al 
27 
Si 
28 
P 
31 
S 
32 
Cl 
35.5 
As 
75 
Se 
79 
Br 
80 
In 
115 
Sn 
119 
Sb 
122 
Te 
128 
I 
127 
(a) Give the symbols of the two elements shown in the diagram which are not in order of atomic 
mass. 
........................................................... and ........................................................... [1] 
(b) Mendeleev left gaps for elements that had not ...
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OCR 2023 GCSE Combined Science B Twenty First Century Science J260/01: Biology (Foundation Tier) Question Paper & Mark Scheme (Merged)
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2 
© OCR 2023 
Chemical Bacteria in the gut compete 
against pathogens 
Microbial Skin stops pathogens 
entering the body 
Physical Stomach acid 
destroys pathogens 
1 Some bacteria are pathogens that cause diseases. 
(a) Our blood contains white blood cells. They help protect us against pathogens. 
(i) Write down the name of the organ that pumps the blood around our body. 
.............................................................................................................................
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Science Unit 1 Test- 9th Grade Questions & 100% Verified Answers | Latest Update | Already Graded A+
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Science 
: A method for studying the natural world. It's also a process that uses 
observations and investigations to gain knowledge about events in nature. 
1st step of the science method 
: State the problem 
2nd step of the science method 
: Research & gather information 
3rd step of the science method 
: Form a hypothesis 
4th step of the science method 
: Test Hypothesis 
5th step of the science method 
: Analyze the data (putting info. in graphs and tables) 
2 | P a g e 
6th step of the ...
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science exam study guide 60-120- 100% Correct!!
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science exam study guide % Correct!! 
Scientists attempt to minimize confirmation bias through ____________________. - 
Answer-dating 
to assign an age to a fossil scientists use -Answer-all of the above 
Because a whale's flipper and a bat's wing have similar bone structure, evolutionists 
refer to the body parts as ______. -Answer-homologous structure 
bacteria are found in which of the following places? -Answer-in all of the following 
questions 
a bacterium's DNA is located in its -Answer...
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Science Exam Practice 100 questions with 100% correct answers 2024
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_ is the study of living things - correct 
answer Life science 
The first step to finding solutions to 
problems such as pollution, deforestation, 
and the extinction of wildlife is to - correct 
answer understand how we affect the 
world around us by making observations 
and asking questions. 
In which of the following areas of study 
might you find a life scientist at work? - 
correct answer studying how wasps could 
be used to control fire ant populations 
Many environmental problems are caus...
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OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/08 COMBINED SCIENCE (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
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OCR 
 
GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) 
 
J260/08 COMBINED SCIENCE 
 (HIGHER TIER) 
 
QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
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OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/07: Physics (Higher Tier) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
- Prüfung • 56 Seiten • 2024
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OCR 
 
GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) 
 
J260/07: Physics (Higher Tier) 
QUESTION PAPER AND MARK SCHEME 
FOR JUNE 2023 (MERGED)
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OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/06 CHEMISTRY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
- Prüfung • 63 Seiten • 2024
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OCR 
 
GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) 
 
J260/06 CHEMISTRY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME 
FOR JUNE 2023 (MERGED)
-
OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/05 BIOLOGY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
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GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) 
 
J260/05 BIOLOGY (HIGHER TIER) QUESTION PAPER AND MARK SCHEME 
FOR JUNE 2023 (MERGED)
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OCR GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) J260/04 Combined Science (Foundation Tier) QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)
- Prüfung • 61 Seiten • 2024
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OCR 
 
GCSE (9–1) COMBINED SCIENCE B (TWENTY FIRST CENTURY SCIENCE) 
 
J260/04 Combined Science (Foundation Tier) 
QUESTION PAPER AND MARK SCHEME 
FOR JUNE 2023 (MERGED)