What is the first thing you should do in case of an accident in the lab?

Notify your teacher immediately

A material that can be hammered or rolled into shapes

Which of these are not in the technology design process?

a) Make observations b) Develop a hypothesis

Matter can be described by its …? (choose two)

Chemical properties, Physical properties

A material that can be pulled out into a long wire

What is the most important safety rule when performing a lab?

Always follow your teacher’s instructions

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CHEMISTRY TRIMONTHLY

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Questions 98

Answers

1
What is salt (NaCl)?
Heterogeneous mixture
Element
Homogeneous mixture
Compound
2
What is the first thing you should do in case of an accident in the lab?
Stay calm
Wash with large amount of water
Cover the wound and apply pressure
Notify your teacher immediately
3
What studies the bodies in space?
Physics
Chemistry
Geology
Astronomy
4
A mixture in which the different parts cannot be seen.
Heterogeneous
Homogeneous
Chemical property
Chemical formula
5
Which of these elements are not gases?
Hydrogen, Helium
Mercury, Bromine
Oxygen, Fluorine
Nitrogen, Chlorine
6
Is ‘ability to react with other substances’ a physical or chemical property?
Physical
Chemical
7
How people change the world around them to meet their needs or to solve practical problems is called?
Model
Copy
Solution
Technology
8
What does this symbol stand for?
Breakage
Heating
Fumes
Plastic gloves
9
A variable that you can manipulate; it is the one you change is called?
Factor
Manipulated variable
Variable
10
Is ‘hardness’ a physical or chemical property?
Chemical
Physical
11
What is potassium?
Homogeneous mixture
Element
Compound
Heterogeneous mixture
12
Malleable is …?
A material that can be pulled out into a long wire
A material that can be hammered or rolled into shapes
13
Which of these are not in the technology design process?
a) Design a solution b) Build a prototype
a) Identify the need b) Research the problem
a) Make observations b) Develop a hypothesis
a) Troubleshoot and redesign b) Communicate the solution
14
Is ‘lack of ability to rust’ a physical or chemical property?
Chemical
Physical
15
The first step in the scientific method is?
Develop a hypothesis
Collect and interpret data
Test the hypothesis through experimentation
Make observations
16
Matter can be described by its …? (choose two)
Independent variables
Dependent variables
Chemical properties
Physical properties
17
What is sodium?
Element
Homogeneous mixture
Heterogeneous mixture
Compound
18
Is ‘ability to conduct electricity’ a physical or chemical property?
Chemical
Physical
19
What is granite?
Homogeneous mixture
Element
Heterogeneous mixture
Compound
20
What is the first step in the technology design process is?
Identify the need
Build a prototype
Research the problem
Design a solution
21
What is seawater?
Element
Heterogeneous mixture
Compound
Homogeneous mixture
22
What is the SI Unit for ‘amount of a substance’?
meter
kelvin
candela
mole
23
What is the study of living organisms and their activities?
Chemistry
Geology
Astronomy
Biology
24
A mixture in which you can see the different parts.
Heterogeneous
Homogeneous
Compound
Mixture
25
An emulsion is a heterogeneous mixture made up of…
Solids and fluids
Solids and solids
Liquids and liquids
26
What is the SI Unit for ‘mass’?
meter
mole
kilogram
second
27
In what state of matter are most elements found?
Liquid
Solid
Gas
28
Is ‘physical state’ a physical or chemical property?
Chemical
Physical
29
What is the SI Unit for ‘electric current’?
second
candela
ampere
mole
30
Ductile is …?
A material that can be pulled out into a long wire
A material that can be hammered or rolled into shapes
31
What is water (H2O)?
Heterogeneous mixture
Element
Compound
Homogeneous mixture
32
The study of the properties of matter and how matter changes.
Homogeneous
Heterogeneous
Chemistry
Science
33
Combustion is a chemical property
True
False
34
In a suspension particles settle out
True
False
35
What is the SI Unit for ‘length’?
ampere
second
meter
candela
36
Is ‘color’ a physical or chemical property?
Physical
Chemical
37
What is smoke?
Heterogeneous mixture
Compound
Homogeneous mixture
Element
38
H2O is an element
True
False
39
What is the SI Unit for ‘time’?
meter
kelvin
second
kilogram
40
Mixture that is evenly distributed and you can’t see the different parts is…
Homogeneous
Heterogeneous
41
There are 11 gases in the periodic table
True
False
42
Is ‘ability to conduct heat’ a physical or chemical property?
Physical
Chemical
43
What is the study of the properties of matter and how it changes?
Physics
Astronomy
Chemistry
Biology
44
A representation of an object or process.
Model
Solution
Technology
Copy
45
What is the most important safety rule when performing a lab?
Show respect and courtesy to your teacher and classmates
Always follow your teacher’s instructions
Make sure you understand directions
Keep your work area clean
46
What is concrete?
Element
Compound
Homogeneous mixture
Heterogeneous mixture
47
He is the Father of the Scientific Method.
Albert Einstein
Galileo Galilei
Isaac Newton
Robert Hook
48
A well-mixed mixture containing a solvent and at least one solute that has the same properties throughout.
Compound
Solution
Chemical formula
Mixture
49
Is ‘texture’ a physical or chemical property?
Physical
Chemical
50
What is vegetable salad?
Homogeneous mixture
Compound
Heterogeneous mixture
Element
51
A combination of symbols that represents the elements in a compound and their proportions.
Chemical property
Solution
Density
Chemical formula
52
What do you do if you spill something on your skin while doing a lab?
Cover the skin with a clean dressing
Do nothing unless the skin blisters
Flush the skin with large amounts of water
Put on plastic gloves
53
Tarnishing is a physical property
False
True
54
Fog is an example of a colloid
False
True
55
Is ‘malleability’ a physical or chemical property?
Chemical
Physical
56
Is ‘porosity’ a physical or chemical property?
Physical
Chemical
57
Is ‘tarnish’ a physical or chemical property?
Chemical
Physical
58
Air is a solution
False
True
59
What is the factor that limits or restricts a design?
Technology
Constrains
Model
Conclusion
60
The ratio of the mass of a substance to its volume.
Density
Chemical property
Solution
Matter
61
A characteristic of a pure substance that describes its ability to change into a different substance.
Matter
Chemical property
Mixture
Chemical formula
62
A pure substance made of two or more elements chemically combined.
Mixture
Density
Solution
Compound
63
An activity involved in designing a solution.
Brainstorming
Identifying the need
64
Mercury is a liquid element
True
False
65
A mixture that is unevenly distributed and you can see the different parts is…
Heterogeneous
Homogeneous
66
Which of these are not steps in the scientific method?
a) Identify the need b) Research the problem
a) Test the hypothesis through experiments b) Collect and interpret data
a) Draw a conclusion about the hypothesis b) Communicate ideas and results
a) Make observations b) Develop a hypothesis
67
What are the branches in which physical science is divided? (choose two)
Physics
Biology
Chemistry
Geology
68
What does this symbol stand for?
Disposal
Heating
Fumes
Corrosive chemicals
69
What is the SI Unit for ‘temperature’?
kelvin
mole
kilogram
ampere
70
Is ‘flexibility’ a physical or chemical property?
Chemical
Physical
71
Matter is …
Amount of space that a substance or object occupies
Anything that has mass and takes up space
72
What is air?
Compound
Heterogeneous mixture
Homogeneous mixture
Element
73
Two or more substances that are mixed together but not chemically combined.
Solution
Chemical formula
Compound
Mixture
74
What studies the earth?
Science
Geology
Biology
Physics
75
What does this symbol stand for?
Heating
Corrosive chemicals
Plastic gloves
Breakage
76
What is lithium?
Compound
Homogeneous mixture
Element
Heterogeneous mixture
77
Mixture is not chemically combined and can be separated by physical means
True
False
78
____ is a way of learning about the natural world through observations and logical reasoning.
Biology
Science
Astronomy
Chemistry
79
Is ‘solubility’ a physical or chemical property?
Physical
Chemical
80
What does this symbol stand for?
Corrosive chemicals
Fumes
Plastic gloves
Disposal
81
What is the system of measurement used by all scientists? (choose two)
The International System of Units
SI Measurments
The International System of Measurement
SI Units
82
A person trained to use both technology and scientific knowledge to solve practical problems.
Doctor
Architect
Scientist
Engineer
83
Tearing is a physical property
True
False
84
Ancient practice that established the origins of Chemistry?
Geology
Physics
Biology
Alchemy
85
What is carbon dioxide?
Element
Heterogeneous mixture
Homogeneous mixture
Compound
86
Anything that has mass and occupies space.
Density
Matter
Chemistry
Mixture
87
What is the SI Unit for ‘luminous intensity’?
candela
kilogram
meter
mole
88
A possible answer to a scientific question.
Hypothesis
Data
Theory
Conclusion
89
Is ‘toxicity’ a physical or chemical property?
Chemical
Physical
90
What does this symbol stand for?
Heating
Disposal
Fumes
Breakage
91
A summary of what you have learned from an experiment.
Theory
Hypothesis
Conclusion
Data
92
Mixtures can be classified as … (choose two)
Heterogeneous
Suspensions
Homogeneous
Colloids
93
What is the study of matter and energy and how they interact?
Geology
Biology
Physics
Astronomy
94
What does this symbol stand for?
Corrosive chemicals
Heating
Breakage
Disposal
95
Bromine is a liquid element
False
True
96
Facts, and other evidence gathered through observations or experiment are called?
Hypothesis
Conclusion
Data
Observations
97
A factor that can change in an experiment is called?
Manipulated variable
Factor
Variable
98
Extensive properties depend on the amount of the substance
False
True

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