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50 questions
Which is NOT one of the three states of matter?
gas
lava
solid
liquid
All matter is made up of
very large particles
solids that cannot be crushed
very small particles
energised atoms
The missing word in the blue box is
melting
evaporating
freezing
sublimating
The missing word in the blue box is
melting
freezing
sublimation
condensation
The missing word in the blue box is
melting
freezing
condensation
evaporation
Evaporation is when ice changes into water:
TRUE
FALSE
Heating increases the speed of particles and cooling slows them down:
TRUE
FALSE
The state of matter at point 1 is a ___________
solid
liquid
gas
all of the above
The state of matter at point 5 is a ____________
solid
liquid
gas
all of the above
What change of state occurs at point 4?
solid to liquid
liquid to gas
gas to liquid
liquid to solid
Is the image a heating curve or cooling curve?
heating
cooling
Ice will float because maximum density is achieved at 4 degrees Celsius, after which the density decreases
TRUE
FALSE
Which state of matter has the lowest density?
solid
liquid
gas
A cup full of ice and water will not overflow when the ice melts:
TRUE
FALSE
Why should you not fill up your water bottle to the top when freezing it?
The water volume will shrink
The water volume will expand
The water volume will stay the same
Which is the least dense?
hot water
cold water
The tendency of water particles to stick together at the top of a full glass is an example of:
strong attachment
diffusion
surface tension
sublimation
When mixing the same amount of water and alcohol together, the final volume will ______________
increase
decrease
stay the same
When you push down the handle of a bike pump, and block the end, the air volume__________ and the air pressure __________:
increases, increases
increases, decreases
decreases, increases
decreases, decreases
Particles move ______ when heat energy is applied
faster
slower
A hot air balloon works because
hot air rises, some air escapes, and the density decreases
hot air sinks, no air escapes, and the density increases
hot air rises, no air escapes, and the density decreases
hot air sinks, some air escapes, and the density increases
Diffusion is the net movement of particles from an area of ______ concentration to _______ concentration
low, high
high, low
Dissolving is defined as the___________
the movement of particles from an area of high concentration to low concentration
the breaking apart of solute molecules by the solvent molecules, and forcing apart
If the temperature of water is increased, the solubility of sugar will ________
increase
decrease
The evaporation of sea water will result in an _______ in salinity
increase
decrease
Water is a ________
atom
element
compound
Two joined atoms that are identical results in a
element
compound
Mixtures occur when two or more different substances are combined but no chemical reaction occurs:
TRUE
FALSE
Which of the following is NOT an atom of CuSO4?
sulfur
sodium
copper
oxygen
On the periodic table, C is
carbon dioxide
calcium
carbon
chlorine
On the periodic table, Fe is
copper
sulfur
iron
potassium
Which of the following is NOT one of the three main groups of elements?
metals
non-metals
noble gases
metalloid
On the periodic table, Au is
mercury
gold
silver
copper
At room temperature, metals are usually
solid
liquid or gas
Which of the following is NOT one of the three components of an atom?
proton
neutron
charge
electron
All atoms contain an equal amount of _______
protons and neutrons
protons and electrons
electrons and neutrons
The atomic number is also equal to the number of ____
electrons
neutrons
protons
The mass number is the ______
sum of protons + electrons
sum of protons + neutrons
sum of electrons + neutrons
Atoms with no overall electrical charge are ______
positive
negative
neutral
The image is an electron configuration of which element?
Boron
Sulfur
Hydrogen
Carbon
How many electrons should be drawn on the blank electron configuration for the element Titanium?
20
21
22
23
For the compound NaHCO3, how many atoms of oxygen are present?
1
2
3
4
Which of the following is NOT always a good indication that a chemical reaction has taken place?
change in temperature
change in state
change in colour
release of energy (heat, sound)
Chemical reactions are often ______ to reverse
easy
difficult
The new substances formed in a chemical reactions are called ________
reactants
products
The PRODUCT of the reaction in the image is:
magnesium
chlorine
magnesium chloride
AgNO3 is called ________
copper nitrate
sulfur dioxide
hydrogen peroxide
silver nitrate
Which of the following is NOT a gas produced during the Hofmann Voltameter test?
carbon dioxide
hydrogen
oxygen
What is the missing gas produced in this chemical reaction?
oxygen
carbon dioxide
hydrogen
hydroxide
Challenge Q: KNO3 is called
potassium hydroxide
nitric acid
potassium nitrate
water
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