What do isotopes have in common?

Different mass numbers, Same protons

What are ionic bonds?

Electrons transferred between atoms

What increases metallic bond strength?

Metal ion charge, Delocalized electrons

What processes are in the carbon cycle?

Volcanic eruptions, Respiration, Photosynthesis

Which factors affect energy transfer?

Nutrients, Temperature, Organism type

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Year 9 Quiz! Science

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Test your knowledge on basic chemistry concepts including atomic structure, bonding, energy, and properties of elements.

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Questions 66

Answers

1
Where is carbon stored?
Soil
Metal ions
Oceans
Atmosphere
2
Chlorophyll absorbs?
Carbon dioxide
Oxygen
Water
Light energy
3
What characterizes metallic bonds?
Sea of electrons
Energy pyramid
Photosynthesis
Carbon fixation
4
What does the periodic table organize?
Elements by atomic number
Elements by color
Elements by weight
Elements by size
5
How does respiration affect CO2?
Conducts electricity
Fixes carbon
Absorbs CO2
Returns CO2
6
AC current reverses?
Power
Voltage
Direction
Resistance
7
What do isotopes have in common?
Same electrons
Same neutrons
Different mass numbers
Same protons
8
Why do atoms bond with others?
To become unstable
To lose electrons
To achieve full outer shell
To gain mass
9
What does Ohm's Law state?
R = VI
I = VR
P = VI
V = IR
10
Why do muscle cells contain numerous mitochondria?
For photosynthesis
For contraction energy
For nutrient storage
For cell division
11
What is the purpose of the tail in sperm cells?
Mobility
Store nutrients
Transmit impulses
Absorb oxygen
12
What does electronegativity measure?
Charge of an atom
Size of an atom
Mass of an atom
Attraction for electrons
13
Parallel circuits have?
Different current
Same voltage
Same current
Different voltage
14
What is the function of long axons in neurons?
Absorb oxygen
Divide cells
Store energy
Transmit impulses
15
What is the slow carbon cycle?
Energy transfer
Metallic bonds
Atmosphere exchange
Rock sediment cycle
16
Where does aerobic respiration occur?
Cytoplasm
Nucleus
Cell Membrane
Mitochondria
17
Photosynthesis equation includes?
6CO₂ + 6O₂
6H₂O + 6O₂
6CO₂ + C₆H₁₂O₆
6CO₂ + 6H₂O
18
Fuses protect circuits by?
Increasing resistance
Melting
Decreasing voltage
Increasing current
19
Why are metals malleable?
Atoms slide past
Photosynthesis
Energy transfer
Carbon cycle
20
What converts CO2 into organic matter?
Metallic bonds
Respiration
Volcanic eruptions
Photosynthesis
21
What happens in convection?
Heat is reflected
Heat rises and sinks
Heat stays still
Heat is absorbed
22
What are ionic bonds?
Electrons lost only
Electrons in a sea
Electrons transferred between atoms
Electrons shared equally
23
DC current flows?
Two directions
One direction
Multiple directions
No direction
24
What increases metallic bond strength?
Carbon dioxide
Metal ion charge
Delocalized electrons
Temperature
25
What affects metallic bond strength?
Photosynthesis
Energy transfer
Transition metals
Carbon cycle
26
What is the fast carbon cycle?
Energy transfer
Atmosphere exchange
Rock sediment cycle
Metallic bonds
27
What does the pH scale measure?
Density of solutions
Temperature of solutions
Acidity or basicity
Volume of solutions
28
Inductors store energy in?
Electric field
Gravitational field
Magnetic field
Thermal field
29
What describes the electron cloud model?
Fixed electron paths
Electrons in nucleus
Regions of probable location
Electrons are stationary
30
What is produced during anaerobic respiration in humans?
Carbon Dioxide
Lactic Acid
Ethanol
Oxygen
31
What processes are in the carbon cycle?
Volcanic eruptions
Respiration
Photosynthesis
Metallic bonds
32
How much can a light microscope magnify?
Up to 1500 times
Up to 1000 times
Up to 500 times
Up to 2000 times
33
Which factors affect energy transfer?
Nutrients
Temperature
Organism type
Metal ions
34
What indicates a precipitate formation?
Increase in temperature
No change in state
Change in state of matter
Decrease in pressure
35
Series circuits have?
Different current
Same voltage
Different voltage
Same current
36
Why is carbon cycle essential?
Fix carbon
Conduct electricity
Increase CO2
Regulate climate
37
How do human activities impact carbon cycle?
Increase CO2
Decrease CO2
Fix carbon
Conduct electricity
38
What is a covalent bond?
Electrons transferred
Electrons lost
Electrons shared unequally
Electrons shared equally
39
What is the magnification formula?
Image size x Actual size
Actual size x Image size
Actual size / Image size
Image size / Actual size
40
How do root hair cells increase absorption?
By storing energy
By dividing
By long extensions
By moving faster
41
What is conduction?
Heat through radiation
Heat through contact
Heat through vacuum
Heat through fluids
42
How do white blood cells engulf pathogens?
By storing energy
By changing shape
By moving faster
By dividing
43
Why are metals conductive?
Carbon cycle
Photosynthesis
Energy transfer
Free electrons
44
What is the objective lens?
Lens for light
Lens closest to specimen
Lens with 10x magnification
Lens you look through
45
What causes high melting points in metals?
Photosynthesis
Carbon cycle
Metallic bonds
Energy transfer
46
What does the law of conservation of energy state?
Energy is always lost
Energy can be created
Energy is transformed only
Energy can be destroyed
47
What is the main energy source for anaerobic respiration?
Fats
Oxygen
Glucose
Proteins
48
What is a parallel circuit?
Components share current
Components share voltage
Components store energy
Components divide
49
What natural events release CO2?
Photosynthesis
Volcanic eruptions
Metallic bonds
Energy transfer
50
Which respiration type is faster?
Aerobic Respiration
Both are equal
Neither is fast
Anaerobic Respiration
51
What is the purpose of staining in microscopy?
Increase magnification
Store energy
Absorb light
Enhance contrast
52
What does a resistor do?
Store energy
Divide cells
Limit current flow
Increase voltage
53
Why do red blood cells have a biconcave shape?
To increase surface area
To divide easily
To move faster
To store nutrients
54
What role do oceans play in carbon cycle?
Release CO2
Conduct electricity
Absorb CO2
Fix carbon
55
What is a series circuit?
Components share current
Components divide
Components store energy
Components share voltage
56
What is the importance of anaerobic respiration?
Quick energy bursts
Requires oxygen
Only for plants
Long-term energy
57
Why are palisade cells packed with chloroplasts?
For oxygen absorption
For nutrient storage
For cell division
For photosynthesis
58
Grounding prevents?
Current shock
Power shock
Voltage shock
Electric shock
59
What happens to carbon dioxide in aerobic respiration?
Converted to glucose
Stored in cells
Used for energy
Expelled from body
60
What is radiation?
Energy through solids
Energy through waves
Heat through contact
Energy through fluids
61
What defines an element's atomic number?
Mass number
Number of neutrons
Number of electrons
Number of protons
62
What is bond dissociation energy?
Energy to form bonds
Energy to stabilize compounds
Energy to create atoms
Energy to break bonds
63
What is a common use of anaerobic respiration in industry?
Aerobic training
Brewing and baking
Cellular respiration
Long-distance running
64
Which respiration type supports endurance activities?
Anaerobic Respiration
Neither type
Both equally
Aerobic Respiration
65
What can lactic acid buildup lead to?
Fatigue and soreness
Improved performance
Increased energy
No effect
66
Circuit breakers interrupt?
Resistance flow
Power flow
Current flow
Voltage flow

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