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The Christmas bio and chem Quiz! Flashcards | StudBud
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The Christmas bio and chem Quiz!
The Christmas bio and chem Quiz!
31 terms
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#Klasse8 #wissenschaft #Biologie #Chemie
Flashcards
31 cards
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Questions
31
Answers
1
Isotopes are atoms with the same atomic number, but different mass numbers
False
True
2
What is not a characteristic of alveoli?
One layer of cells as a wall
Microscopic small
Inhibit gas exchange
Moist inside
3
Examples for abiotic factors are
Precipitation
Parasites
Diseases
Wind speed
4
To separate a mixture of liquids with different boiling points you use…
Evaporation
Sieving
Distillation
Chromatography
5
An element is found in group 2 and period 5.
It forms an acid, when it reacts with water.
It’s an alkali metal.
It has 2 valence electrons.
It has 4 electron shells.
6
Euglena is
An organ
An organism
A tissue
A cell
7
Atomic number 12 - number of protons in the nucleus?
11
14
13
12
8
Phenolphthalein turns pink when
It is in an alkali solution
It is in an acidic solution
When water reacts with lithium
When an indicator is added
9
There are only two liquid chemical elements (at room temperature temperature).
False
True
10
An example for a producer is
Mushroom
Algae
A fish
Zooplankton
11
Chemistry is cooler than bio
False
True
12
An atom with 15 electrons is in which period?
5
2
4
3
13
The diameter of capillaries is about the size of a red blood cell.
True
False
14
There are more nonmetal elements than metals.
False
True
15
Who discovered that the nucleus is positively charged and very small in comparison to the electron shells?
Galen
Bohr
Rutherford
16
The name of group 17 is…
Alkali metals
Noble gases
Halogens
Transition metals
17
Which one is a characteristic of veins?
They have a thick wall
They carry blood away from the heart
They have valves
They carry deoxygenated blood
18
When iron and sulphur react with each other, they…
… melt and stick together
The form a liquid
They form new chemical bonds
They form new substance
19
Predators are the first in the food chain
False
True
20
An atom with 15 electrons is in which group?
6
5
4
3
21
Equation for cellular respiration: carbon dioxide and water react to glucose and oxygen
False
True
22
A typical structure in the trachea is
C-shaped rings of cartilage
Alveoli
Saliva
Voice cords
23
What is true for neutrons?
In the nucleus
Number can vary in a chemical element
Number of neutrons = atomic number - mass number
Same number as the number of electrons
24
Iron is a
Transition metal
Alkali metal
Metalloid
Basic metal
25
The name of the scientist who postulated that blood is constantly made by the liver is…
William Harvey
Galen
26
Which is a consumer?
Dog
Fungus
Apple tree
Phytoplancton
27
Blood plasma is separated from blood cells via
Sieving
Centrifuging
Filtering
Evaporation
28
What is not a characteristic of the aorta?
Thick muscle layer
Attached to the left ventricle
Does not contain valves
Contains deoxygenated blood
29
Kidneys are an example for
An organ
A tissue
A cell
An organs system
30
William Harvey is famous for
being a doctor
Being the doctor for British royalty
Discovering the double circulation
Dissecting people
31
Which statements are true for an element with the atomic number 2 and mass number 4?
It is a non-metal.
Its nucleus contains 2 neutrons.
It is called hydrogen.
It is a noble gas.
