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WorksheetsChapter 10 Foundation of Chemistry
Total questions: 47
Worksheet time: 24mins
1. When a mixture contains substances that are not evenly mixed, what is it called?
a) Homogeneous mixture
a) Heterogeneous mixture
a) Substantial mixture
a) Disharmonic mixture
1. What is a compound?
a) Several elements that have chemically bonded together
a) Any substance with more than two atoms
a) Any chemical process involving oxygen
a) One element consisting of chemically bonded atoms
1. Dissolving sugar in water leads to what kind of type of mixture?
a) Heterogeneous mixture
a) Syrup
a) Isotonic water
a) Homogeneous mixture
1. What is a feature of ALL substances?
a) They all share the same boiling point
a) They all have the same mass
a) They all have the same density
a) They all have their unique properties
1. What type of solution is saltwater?
a) heterogeneous
a) Compound
a) element
a) homogenous
1. An element consists of just one type of
atom
mixture
compound
electron
1. Each type of atom contains a different number of protons in its
neutron
electron
nucleus
atom
1. The number of protons in an atom determines an element’s
composition
a) atomic number.
a) chemical formula.
a) Atomic mass
1. The atoms of most elements exist
a) as individual atoms.
a) in pairs.
a) in groups.
a) In mixture
1. Which item is a substance?
a) aluminum
a) apple juice
a) muddy water
a) paper
1. The number of protons in an atom of an element is the element’s
a) atomic mass.
a) atomic number.
a) element symbol.
a) compound
1. H2O is an example of
a) an atomic number.
a) an element symbol.
a) a chemical formula.
a) mixture
1. The individual substances that make up a ……………… are not evenly mixed.
a) compound
a) homogeneous mixture
a) heterogeneous mixture
a) element
1. Aluminum and carbon dioxide are examples of
a) mixtures.
a) solutions.
substances
a) compounds.
1. The number of protons in an atom of an element is the element’s
a) atomic mass.
a) atomic number.
a) element symbol.
a) chemical formula.
1. A kind of matter that is classified as a solution could also be classified as
a) a mixture.
a) an element.
a) a substance.
a) a compound.
1. A chemical formula represents the different
a) substances in a mixture.
a) properties of an element.
a) parts that make up an atom.
a) elements that make up compounds.
1. What is mass?
a) the amount of energy contained in an object.
a) the amount of matter contained in an object.
a) pull of gravity on an object
a) Mass is another word for weight.
1. What is the ability of an object to carry heat?
a) heat ability
a) solubility
a) conductivity
a) radiation
1. Mass per unit of volume is the formula to calculate which property of an object?
a) density
a) gravity
a) boiling point
a) mass
1. How does the boiling point of water change with increasing mass?
a) The boiling point will be higher.
a) Changes in mass have no effect on the boiling point of water
a) The boiling point will be lower
a) Water will not boil if the mass is too large
1. What are physical methods like boiling and filtering used for when working with mixtures?
a) To separate them into substances.
a) To vaporize the mixture
a) To increase the thermal energy within
a) To determine the volume
1. Sugar is dissolved in water. How does the mass of the solution change?
a) It will increase by the exact mass of the sugar.
a) It will stay the same
a) It will decrease due to the absorption rate of water
a) It will rise by half the mass of the sugar.
1. What kind of change occurs if matter changes in amount, size, or shape?
a) substance change
a) chemical change
a) physical change
a) elemental change
1. What is sublimation?
a) The change of a solid into liquid and then into gas
a) A solid turning into a liquid.
a) The change of a solid into gas
a) A liquid turning into gas
1. What happens to a solid if thermal energy is reduced?
a) slower particle movement
a) faster particle movement
a) The melting point increases.
a) Particle cohesion decreases
1. Which formula is used to calculate density?
a) density = mass ÷ volume
a) density = mass × volume
a) density = mass + volume
a) density = mass – volume
1. Which substance contains particles that move most quickly?
a) gas
a) solid
a) liquid
a) Solid and liquid
1. Which property is size-independent?
a) mass
a) volume
a) conductivity
a) weight
1. Which phrase describes the particles of a solid?
a) fast moving
a) fill their container
a) very close together
a) flow past one another
1. A small block has a volume of 15 mL and a mass of 30 g. What is its density?
a) 4.5g/mL
a) 0.5 g/mL
a) 2.0 g/mL
a) 15.0 g/ml
1. Which property would vary between two different-sized samples of the same substance?
a) volume
a) solubility
a) magnetism
a) conductivity
1. During a physical change, the physical properties of matter
change
disappear
a) stay the same.
a) Not change.
1. The total mass before and after a physical change
a) increases.
a) decreases.
a) stays the same.
change
1. Conservation of mass affects
a) only physical changes.
a) only chemical changes.
a) physical and chemical changes.
a) None of above
1. Dissolving is best described as
a) mixing evenly.
a) disappearing completely.
a) forming a new substance.
a) All of above.
1. When matter undergoes a physical change, mass is
a) never conserved.
a) always conserved.
a) sometimes conserved.
a) Change to weight.
1. Dissolving and melting are similar because both
result in a change in mass.
are kinds of physical change.
involve even mixing of substances.
result in new substances being formed.
1. If 4 g of salt dissolved in 200 g of water, what would be the final mass of this mixture?
a) 50 g
a) 196 g
a) 204 g
a) 800 g
1. Matter changing into a substance with new physical and chemical properties is called?
a) Physical change
a) Physical properties
a) Chemical properties
a) Chemical change
1. What property does increase the concentration of a solution involve?
a) the reaction rate
a) the number of particles of solute
a) the boiling point
a) the fluidity
1. What property is present in ALL matter and contributes to chemical changes?
a) reacting quickly with other matter
a) how fast the temperature changes
a) movement of particles
a) particles which repel each other
1. Which situation is proof that a chemical change occurred?
a) change in color
a) appearance of bubbles
a) formation of a new substance
a) Change in size
1. An increase in the temperature of the reactants would cause a chemical reaction to
a) explode.
a) speed up.
a) slow down.
a) Not Change
1. A change in is a sign that a chemical change might have occurred.
a) size
a) state
a) smell
a) shape
1. Which item is NOT shown in a balanced chemical equation?
a) the products of the reaction
a) the rate at which the reaction occurs
a) the reactants present before the reaction
a) the conservation of mass during the reaction
1. Which activity could be a sign that a chemical change has occurred?
a) a solid melt
a) a substance dissolves
a) a liquid change colors
a) an object change shape
