Unit 1 Review!!! Question Preview (ID: 47858)
Unit 1 6th Grade Science!
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Molding play-doh.....physical or chemical change?
a) Physical Change
b) Chemical Change
c)
d)
Burning a marshmallow.....physical or chemical?
a) Physical Change
b) Chemical Change
c)
d)
A group of students is collecting data to determine which month is the most common birthday month in their class. What kind of information will they collect?
a) Quantitative data
b) Qualitative data
c) Predictions
d) Inferences
A pure substance made by chemically combining two tor more elements; represented by a chemical formula describes which term?
a) Chemical formula
b) Chemical bond
c) Element
d) Compound
During the Chemical and Physical Changes lab, as you made observations with the vinegar and baking soda, what took place?
a) Bubbling and fizzing
b) Nothing
c) Unexpected color change
d) Freezing
Which of the following is an example of a physical change?
a) Bubbles
b) Combustion
c) Freezing
d) All of the following
In the periodic table, the letters Fe stand for what?
a) Compound
b) Feron
c) Iron
d) Carbon
What is a compound?
a) A substance made of at least two atoms of a single element.
b) A substance made of at least two elements that are chemically combined in a set ration.
c) A substance made of at least two elements that are chemically bonded and can be mixed in any ration.
d) A substance that has only one element and can't be mixed to another atom.
Water can be represented by the chemical formula H20, what does the 2 represent?
a) Oxygen
b) Hydrogen
c) Two atoms of Oxygen
d) Two atoms of Hydrogen
During the bubble lab, it was important to mix the two solutions together.
a) True
b) False
c)
d)
Factors that can change in an experiment.
a) Variables
b) Weather
c) Science
d) Theory
When you explain or interpret the things you observe
a) Inference
b) Theory
c) Educated Guess
d) Hypothesis
Janice noticed that the Squirrels tail was short and bushy, unlike most squirrels in her neighborhood. What type of observations is this?
a) Qualitative
b) Quantitative
c) Observation
d) Scientific Experiment
The variable that changes as a result of changes to the independent variable in an experiment
a) Independent Variable
b) Dependent Variable
c) Controlled Variable
d) Observing Variable
The one variable that scientist changes during an experiment; Also called the Manipulated Variable
a) Independent
b) Dependent
c) Controlled
d) Changed
Your lab partner notices a tiny crack in a beaker that you are heating over a Bunsen burner. What do you do?
a) Put some duct tape on it, duct tape fixes everything
b) stop everything and notify the teacher immediately
c) get another beaker
d) do nothing, and hopefully it does not break
You should wash your hands after
a) Touching a plant in the classroom
b) Handling one of the class pets
c) Working with chemicals
d) All of the Above
Its ok to wear open toe shoes or sandals in the lab
a) True
b) False
c)
d)
What type of eye cover is acceptable to wear during chemistry labs?
a) Your glasses will be enough if you have any
b) glasses that have wrap-around side coverage
c) helmets only
d) Approved safety goggles only
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