WorksheetsSemester 1 Exam Review pt. 2
Total questions: 60
Worksheet time: 2hrs 31mins
tells us the number of atoms of each element in a compound
Coeffecient
Exponent
Subscript
Calculator
a process or reaction in which the system absorbs energy from its surroundings; usually in the form of heat
Endothermic Reaction
Exothermic Reaction
Diffusion
Fission
type of chemical reaction where two compounds react, and the ions of the two reactants switch places, forming two new compounds or products
Double Displacement
Single Displacement
Synthesis
Decomposition
type of reaction in which two or more elements combine to form a compound
Double Displacement
Single Displacement
Synthesis
Decomposition
type of reaction in which a compound is broken down into two or more elements
Double Displacement
Single Displacement
Synthesis
Decomposition
Which of the following 2 are chemical reactions?
sugar dissolving in water
water turning into steam
burning wood
mixing baking soda and vinegar
tearing paper
Which of the following 2 are chemical reactions?
sugar dissolving in water
water turning into steam
burning wood
mixing baking soda and vinegar
tearing paper
A chemical change is different than a physical change because in a chemical change
chemicals are used
molecules do not physically touch
a new substance is formed and in a physical no new substance is formed
the change can be seen but in a physical change it cannot
How many Carbons are present on the reactant side?
1
2
3
4
How many Hydrogens are on the product side of this chemical equation?
1
2
3
4
Why are chemical equations always balanced? Select ALL that apply.
Matter cannot be created.
Matter cannot be destroyed.
Matter can only be rearranged/conserved.
Matter doesn't matter.
In a chemical reaction, if the reactants are heated, the reaction usually happens
slower
faster
at the same rate
in a smaller volume
Some chemical reactions require a substance called a catalyst. The purpose of a catalyst is
to warm up the reaction
to speed up the reaction
to create more reactants
to stop the reaction
Is this chemical equation balanced? Why or why not? Choose the BEST answer.
Yes, the amount of atoms for each element are equal on both the reactant and product side.
No, the carbons are not the same number on both the reactant and product side.
No, neither the carbons or hydrogens are the same amount on both the reactant and product side.
No, none of the elements (carbon, hydrogen, or oxygen) are the same amount on both the reactant and product side.
Which of the following is a common sign that a chemical change has occurred?
A chemical has turned a different color, bubbled, and/or changed temperature.
A chemical has changed to a different state of matter, such as a liquid to a solid.
A chemical has changed size.
A chemical has become a different shape.
__K + __Br2 --> __KBr
FeS + Hal --> H2S + FeCl
__HNO2 + __O2 --> __HNO3
What is the state of matter when molecules are tightly packed together
solid
liquid
gas
A substance that resists change and holds it's shape.
liquid
solid
water
clouds
The temperature at which a gas turns into a liquid
Melting point
Freeing point
Boiling point
Condensation point
The temperature at which a substance changes from a liquid to a gas
Melting point
Boiling point
Freezing point
Condensation point
the mass per unit volume of a substance
mass
weight
volume
density
A substance that is made up of only 1 element
homogeneous mixture
heterogeneous mixture
pure substance
compound
TRUE or FALSE: The particles in solids move around a lot and spread out.
TRUE
FALSE
TRUE or FALSE: Liquids have a fixed volume but not a fixed shape.
TRUE
FALSE
Which of the following statements is NOT true about gases?
Gases do not have fixed shape or volume
Gas particles do not move much, but vibrate
Gas particles have a lot of free space
Unlike solids, gases can be compressed
Which of the following statements is true about liquids?
Particles do not move around much, but vibrate
Particles have a lot of free space and spread out
Liquids have fixed shape & volume
Particles are less closely packed than solids
Look at the picture. Which state of matter is in beaker C?
Solid
Liquid
Gas
Blue thingys
A _________ is made of two or more substances that are together in the same place but their atoms are NOT chemically bonded.
compound
mixture
substance
filtration
A type of mixture where you can see the different parts and they can easily be separated into their different parts.
atomic mixture
Compound mixture
Heterogeneous mixture
Homogeneous mixture
A type of mixture that you can't see the different parts.
Homogeneous mixture
Heterogeneous mixture
Compound
distillation
Heterogeneous and Homogeneous are two types of what?
compounds
elements
mixtures
atoms
Pure Substance
Matter that always has the exact same composition.
Element
A substance that cannot be broken down into simpler substances
Compound
A substance that is made of 2 or more simpler substances.
Heterogeneous
The parts of this mixture are noticeably different.
Homogeneous
The parts of this mixture are indistinguishable from one another.
Which of the following are considered pure substances?
homogeneous mixture
compound
element
heterogeneous mixture
Which of these are homogeneous mixtures?
peanuts and almonds mixed in a bowl
food dye mixed in water
a cup of tea and sugar
concrete
Solutions are ___________ mixtures.
Solid
Homogeneous
Heterogeneous
Gas
Matter is anything that takes up space and has mass. It can be classified into two(2) groups. What are those classifications?
Homogeneous and Heterogeneous
Elements and Compounds
Pure substances and Mixtures
Solute and Solvent
In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.
Constant, changing
Changing, constant
