WorksheetsPhysical & Chemical/Metals, NM, & Metalloids Test Review
Total questions: 20
Worksheet time: 10mins
A student places iron filings into water and lets the mixture sit overnight. In the morning, the student notices that the iron has rusted and has an earthy odor. Which of the following statements is true?
A chemical reaction occurred because a new substance was produced.
Physical change occurred because the iron rusted.
No reaction occurred at all
The reaction was a physical change because there was a change in color.
A student melts a block of chocolate in the microwave for an experiment. By doing this, the student observes a change in the shape of the chocolate. This change is evidence of:
a chemical change because a new substance was formed
a physical change because a new substance was formed.
a physical change because the chocolate is the same substance, just a different shape.
a chemical change because there was a precipitate formed.
When baking soda and vinegar are added to the same test tube, a reaction takes place and gas bubbles are formed. This is a :
physical reaction because a gas is produced.
physical reaction because there was an increase in temperature.
chemical reaction because light was given off.
chemical reaction because a gas was produced.
Which of the following is a characteristic of ALL chemical changes?
All chemical changes create or destroy energy.
All chemical changes emit light.
All chemical changes create matter.
All chemical changes form a new substance.
Which of the following is an example of a chemical change?
ice cracking
milk souring (spoiling)
sugar dissolving
lead melting
A beaker containing ice and water is placed on a warm hotplate. Will the ice in the beaker undergo a physical or chemical change?
a physical change because it will change state of matter.
A chemical change because it will change state of matter.
a physical change because it will form a new substance
a chemical change because it will for a new substance.
Metals all share certain physical properties. Which properties listed below do MOST metals share?
Most metals are brittle.
Most metals are malleable.
Most metals are poor conductors of electricity.
Most metals have a very low boiling point.
Looking at the periodic table, which physical property of metalloids makes them useful in electronic equipment such as cell phones, computers and tablets?
They are ALL malleable and bend easily.
They are all gas at room temperature so they are lightweight.
They have a complete set of valence electrons and do not react.
They are semi-conductors of electricity.
The elements in green are non-metals. Which physical properties are typical of non-metals?
Non-metals are dull. They are insulators (do not conduct electricity) and they are brittle.
Non-metals are shiny (have high luster), good conductors of electricity and are malleable.
Non-metals are dull, brittle and good conductors of electricity.
Non-metals are very shiny insulators (do not conduct electricity) and are brittle.
Using what you know about the physical properties of elements, which material would be the BEST conductor of electricity?
glass
plastic
iron
wood
A student wants to design a faster, more efficient cell phone charger based on research in the science lab. He chooses an element for his charging cable that is malleable, conducts electricity very well, and can be made into small wires. Which element did he probably choose based on these physical characteristics?
hydrogen
carbon
copper
argon
