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WorksheetsReview 1
Total questions: 14
Worksheet time: 7mins
The particles that make up all matter are called
genes
cells
minerals
atoms
Which jar best models the molecules of a gas?
A
B
C
Bars are set up from a heat source to a room temperature counter. What will be observed?
Heat will move through all materials at the same speed
Metal will conduct heat to the room temperature counter most quickly
The cool from room temperature side will conduct through the metal more quickly to the heat
Wood will conduct heat more quickly to the room temperature side.
When 1 gram of water is evaporated in a closed container, the volume increases but mass remains constant. Why?
The number of atoms remains constant
The pressure on the water remains constant
The distance between the water molecules remains constant
The temperature of the water remains constant.
What is in the bubbles of boiling water?
Heat
Air
Hydrogen and Oxygen
Water Vapor
When comparing the SAME substance, which conclusion is supported by the mass, volume, & density measurements in the table?
When the mass is increased there is a change to the density
When mass is decreased, there is no change to the volume
when mass is increased, there is a change to the volume
How can scientists determine one substance from another?
Run complex chemical tests
Find physical properties like density and melting point
Try to join substances to see how they combine
Look at color and state
Why did scientists create the periodic table of elements?
They found patterns in the physical properties & arranged them in groups
They added new elements by date discovered
They grouped them by phase at room temperature
They determined how much was on Earth and put them in groups that way
Two students observed phase change of water as heat was added. The observed the water go from
ice to water vapor to water
water to water vapor to ice
water vapor to water to ice
ice to water to water vapor
During a physical change, when heat is added, the particles of a substance
move closer together
move slower
move faster
become something new
A student fills a bag with different powders & observes that the powders mix but all 3 are still visible. Then liquid is added and the bag sealed. The bag expands, the liquid bubbles and the mixture feels warm. What is happening?
There is no way to know
It is likely a physical change - the liquid becomes gas because heat was added
It is likely a chemical change - the liquid and solid powders combine to make something new
What would be a good scientific explanation to explain whether any of the liquids are the same substance based on the data table
Liquid 1 & 4 are the same because their density & melting point are the same and they are important physical properties
Liquid 1 & 2 are the same because their color & mass are the same & color & size are important chemical properties
Liquids 1,2 & 4 are all the same because they are colorless and that is an important property
None of them are the same because none of them have all the same properties listed & if everything doesn't match they can't be the same.
Which best describes the properties of sodium, chlorine & sodium chloride?
All have similar physical & chemical properties
All have different physical & chemical properties
All have similar physical & different chemical properties
All have similar chemical & different chemical properties
If scientists bring back 2 rock samples from space, one weighs 1000g and the other weighs 10g, how could they decide if the rocks are the same substance?
They cant be the same because they weigh different amounts
Measure the volume of each, then find their density and see if it is the same.
Measure their volumes if they are the same the substance will be the same
If they came from the same place they are probably the same.
