How are the processes of combustion & respiration different?

combustion is fast - Respiration is slow

Some positive aspects of nuclear technology include

tracers to detect diseases, power that doesn't emit greenhouse gases

An exothermic reaction is a chemical reaction that

the substances reacting releases energy as heat

Most of the mass in an atom

is found in a densely packed nucleus

What effect does increasing temperature have on a reaction?

It usually speeds up the reaction

Biochemistry is the study of

chemical reactions in living beings

The lanthanides & actinides are usually shown separate from the main table. This is because

it is easier to fit the table one a page this way

Why is chemistry so important?

it is cool, production of long lasting batteries, the production of light & strong materials, better quality drugs to save lives

Some positive impacts of the production of plastics are

cheap & lightweight housings for computers, packaging that can protect & preserve food

In the periodic table the semi-metals are found

approximately in the upper middle

Chemical reactions represent the law of conservation of matter by

new substances form by rearranging atoms not creating or destroying them

Particle accelerators such as the Large Hadron Collider allow

the discovery on new sub-atomic particles, discoveries about the start of the universe

An acid reacting with a carbonate produces

carbon dioxide plus a salt & water

Which of the following reactions represents an acid reacting with a metal?

zinc + hydrochloric acid → zinc chloride + hydrogen

Which of the following reactions represents an acid reacting with an alkali?

copper oxide + sulfuric acid → copper sulfate + water

Mendeleev left gaps in his periodic table as he was sure

the spaces were undiscovered elements

an atom of the same element with different numbers of neutrons

Which of the following represents a displacement reaction?

copper + silver nitrate → copper nitrate + silver

Which of the following represents a combination or synthesis reaction?

magnesium + chlorine → magnesium chloride

An endothermic reaction is a chemical reaction that

takes in energy from the surroundings

Einstein had a radical idea about atoms that stated that

matter & energy could be interchanged

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Stage 5 - Chemical World

72 termsStudBud Administration18 plays

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Questions 72

Answers

1
How are the processes of combustion & respiration different?
both release energy
combustion is fast - Respiration is slow
both absorb energy
both occur quickly
2
Which particles are found in the nucleus of an atom?
electrons & protons
electrons
neutrons & electrons
protons & neutrons
3
Some positive aspects of nuclear technology include
nuclear bombs
tracers to detect diseases
power that doesn't emit greenhouse gases
nuclear waste
4
In the periodic table the metals are found
separated from the main table
lower down & to the left
approximately in the upper middle
to the upper right
5
Carbon 14 has how many protons & neutrons
6 P 8 N
8 P 6 N
10 P 4 N
7 P 7 N
6
Some negative aspects of nuclear technology include
nuclear waste
power that doesn't emit greenhouse gases
tracers to detect diseases
nuclear bombs
7
The element with 8 protons is
Carbon
Helium
Oxygen
Hydrogen
8
The common name for this compound is
water
hydrochloric acid
baking soda
table salt
9
An acid reacting with a base produces
water plus oxygen
salt plus water
hydrogen & a salt
carbon dioxide plus a salt & water
10
Nitrogen, oxygen & fluorine are
gases
very reactive
unreactive
radioactive
11
The element with 6 protons is
Helium
Hydrogen
Oxygen
Carbon
12
An exothermic reaction is a chemical reaction that
takes in energy from the surroundings
the substances reacting releases energy as heat
13
Most of the mass in an atom
orbiting the nucleus
spread out evenly
is found in a densely packed nucleus
found is hologrammatic simulations
14
What effect does increasing temperature have on a reaction?
It usually slows down the reaction
It has no effect on the reaction
It usually speeds up the reaction
15
Biochemistry is the study of
photosynthesis
chemicals in fuels
physical reactions in living beings
chemical reactions in living beings
16
The creation of the periodic table is usually given to
Stephen Hawking
Dimitri Mendeleev
Gregor Mendel
Albert Einstein
17
A reaction where two chemicals are combined is called
corrosion
decomposition
synthesis
combustion
18
The lanthanides & actinides are usually shown separate from the main table. This is because
it is easier to fit the table one a page this way
they are not real elements
they were only discovered in the 21st century
no one knows
19
The word atom comes from the Ancient Greek word atoms which means
risible
visible
invisible
indivisible
20
A reaction between an acid & a base is called
displacement
neutralisation
combustion
decomposition
21
All matter is made of
atoms
tiny sandwiches
22
Why is chemistry so important?
it is cool
production of long lasting batteries
the production of light & strong materials
better quality drugs to save lives
23
The type of reaction that occurs during digestion is
corrosion
decomposition
precipitation
combustion
24
Some positive impacts of the production of plastics are
they can act as a poison in food chains
cheap & lightweight housings for computers
they do not break down easily
packaging that can protect & preserve food
25
In the periodic table the semi-metals are found
separated from the main table
lower down & to the left
to the upper right
approximately in the upper middle
26
Which of the following are sub-atomic particles?
neutron
electron
moron
proton
27
The periodic table is arranged order of increasing
virtual number
atomic number
neutron number
Higgs number
28
Chemical reactions represent the law of conservation of matter by
new substances form by creating or destroying atoms
new substances form by nuclear processes
new substances form by rearranging atoms not creating or destroying them
29
The element with 1 proton is
Oxygen
Carbon
Helium
Hydrogen
30
Particle accelerators such as the Large Hadron Collider allow
the discovery on new sub-atomic particles
the discovery of new forms of water
the discovery of new species of animal
discoveries about the start of the universe
31
Rutherford conducted an experiments by firing alpha particles at a thin gold sheets. It showed that atoms were
only virtual particles
mostly empty space
evenly spread out
had a conscience
32
A reaction where a molecule breaks apart is called
corrosion
decomposition
combustion
synthesis
33
A slow chemical reaction combining a compound with oxygen is called
corrosion
neutralisation
precipitation
decomposition
34
An acid reacting with a carbonate produces
salt plus water
water plus oxygen
hydrogen & a salt
carbon dioxide plus a salt & water
35
All chemical reactions involve the transfer of
tectonic energy
energy
thought
DNA
36
The common name for this compound is
water
table salt
baking soda
hydrochloric acid
37
Which of the following reactions represents an acid reacting with a metal?
zinc + hydrochloric acid → zinc chloride + hydrogen
copper oxide + sulfuric acid → copper sulfate + water
copper + silver nitrate → copper nitrate + silver
magnesium + chlorine → magnesium chloride
38
Which of the following reactions represents an acid reacting with an alkali?
copper oxide + sulfuric acid → copper sulfate + water
copper + silver nitrate → copper nitrate + silver
magnesium + chlorine → magnesium chloride
zinc + hydrochloric acid → zinc chloride + hydrogen
39
Mendeleev left gaps in his periodic table as he was sure
all elements had been discovered
we would never find new elements
the spaces were undiscovered elements
40
An isotope is
an atom of the same element with different numbers of protons
an atom of the same element with different numbers of neutrons
an atom of the same element with different numbers of electrons
an atom of the same element with different numbers of morons
41
Which of the following represents a displacement reaction?
copper oxide + sulfuric acid → copper sulfate + water
magnesium + chlorine → magnesium chloride
copper + silver nitrate → copper nitrate + silver
zinc + hydrochloric acid → zinc chloride + hydrogen
42
Atoms near the bottom of the periodic table tend to be
very reactive
radioactive
gases
unreactive
43
In the periodic table the non-metals are found
separated from the main table
to the upper right
approximately in the upper middle
lower down & to the left
44
An important chemical reaction that converts carbon dioxide & sunlight into energy is called
respiration
photosynthesis
chemosynthesis
exogenesis
45
Which of the following represents a combination or synthesis reaction?
copper oxide + sulfuric acid → copper sulfate + water
magnesium + chlorine → magnesium chloride
zinc + hydrochloric acid → zinc chloride + hydrogen
copper + silver nitrate → copper nitrate + silver
46
Electrons are found
in the centre of the nucleus
evenly spread through the atom
orbiting the nucleus
47
An endothermic reaction is a chemical reaction that
the substances reacting releases energy as heat
takes in energy from the surroundings
48
The common name for this compound is
table salt
hydrochloric acid
methane
baking soda
49
Group 8 elements are
radioactive
gases
unreactive
very reactive
50
Einstein had a radical idea about atoms that stated that
matter & energy could be interchanged
matter could not be created or destroyed
matter & energy were not real
energy could not be created or destroyed
51
An important chemical reaction that releases energy in cells is called
chemosynthesis
exogenesis
respiration
photosynthesis
52
Matter is
composed of atoms made from earth, wind & fire
composed of atoms with no mass
composed of atoms & has mass
composed of quarks with no mass
53
The group 1 & 7 elements are
radioactive
gases
very reactive
unreactive
54
A fast chemical reaction combining a compound with oxygen is called
decomposition
corrosion
precipitation
combustion
55
The neutron was hard to detect as it had no
empathy
charge
mass
feelings
56
A reaction where one molecule replaces another is called
combustion
neutralisation
decomposition
displacement
57
An acid reacting with a metal produces
carbon dioxide plus a salt & water
hydrogen & a salt
water plus oxygen
salt plus water
58
One of the earliest applications of chemistry was in making stronger & lighter
houses
horses
boats
weapons
59
The common name for this compound is
methane
baking soda
table salt
ammonia
60
What effect does a catalyst have on a reaction?
It usually slows down the reaction
It usually speeds up the reaction
It has no effect on the reaction
61
Cathode ray tubes were able to discover the smallest component of the atom, which was the
neutron
electron
nucleus
proton
62
The common name for this compound is
table salt
baking soda
water
ammonia
63
The element with 2 protons is
Carbon
Hydrogen
Helium
Oxygen
64
How are the processes of combustion & respiration similar?
both occur quickly
both absorb energy
combustion is fast - Respiration is slow
both release energy
65
Much of our understanding of atoms has only come about in the last few hundred years. This is because
atoms only exist when you look at them
atoms are incredibly large
atoms are incredible small
atoms do not exist
66
An atom is
the smallest unit of an elements that can be represented by a symbol
the smallest unit of a molecule that can be represented by a symbol
the smallest unit of a cell that can be represented by a symbol
the smallest unit of a proton that can be represented by a symbol
67
Industrial chemistry is
production of fuels
any biological process
the large scale manufacturing of useful materials
production of carbon dioxide
68
Einstein's idea about energy & matter lead to the development of
nuclear bombs
the theory of platen tectonics
nuclear energy
the double helix structure of DNA
69
The common name for this compound is
methane
ammonia
baking soda
table salt
70
Some negative impacts of the production of plastics are
they do not break down easily
cheap & lightweight housings for computers
they can act as a poison in food chains
packaging that can protect & preserve food
71
A reaction where two mixed liquids form a solid is called
corrosion
precipitation
combustion
decomposition
72
In the periodic table, the lanthanides & actinides are found
lower down & to the left
approximately in the upper middle
to the upper right
separated from the main table

Stage 5 - Chemical World Flashcards | StudBud