FREE CHEMISTRY AND STUDY GAMES ABOUT 6TH GRADE

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FREE CHEMISTRY AND STUDY GAMES ABOUT 6TH GRADE

CHEMISTRY EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -28 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: boiling point

Answer:

the temperature at which a substance changes state from a liquid to a gas; ex. water boils at 100 degrees C and this is a PHYSICAL PROPERTY

Question 2: non-metals

Answer:

a group of elements that are either weak, brittle solids or gases that are not conductors, not malleable, and not ductile

Question 3: metalloids

Answer:

a group of elements that have properties of both metals and non-metals

Question 4: precipitate

Answer:

a solid that forms as the result of a chemical reaction between two liquids

Question 5: periodic table

Answer:

a systematic way to organize elements according to common physical and chemical properties

Question 6: organic

Answer:

compounds that contain carbon; compounds that come from once living organisms

Question 7: mass

Answer:

the amount of matter in an object

Question 8: ductility

Answer:

the ability of a substance to be stretched into a very thin wire such as gold; this is a PHYSICAL

PROPERTY

Question 9: chemical changes

Answer:

a change in matter that produces a new substance. Ex. Burning toast.

Question 10: element

Answer:

a pure substance that cannot be broken down by any means; examples include carbon, oxygen, hydrogen

Question 11: volume

Answer:

the amount of space an object takes up

Question 12: malleability

Answer:

the ability of a substance to be pounded into thin sheets without shattering such as aluminum; this is a

PHYSICAL PROPERTY

Question 13: vaporization

Answer:

phase change from a liquid to a gas; molecules speed up and move further apart

Question 14: chemical property

Answer:

a characteristic that you observe when a substance REACTS with another substance. Ex. Silver reacts with oxygen (tarnishes).

Question 15: inorganic

Answer:

compounds that come from minerals; compounds that come from non-living material

Question 16: physical property

Answer:

a characteristic that can be observed without changing what the substance is made of. Ex. The bread is soft.

Question 17: luster

Answer:

the state or quality of shining by reflecting light

Question 18: condensation

Answer:

the phase change that occurs when a gas cools down enough to change to a liquid; clouds are formed this way

Question 19: physical changes

Answer:

a change that alters the appearance of a substance, but does not affect what it is made of. Ex. Dry ice sublimating.

Question 20: matter

Answer:

anything that has mass and volume

Question 21: compound

Answer:

two or more elements chemically combined

Question 22: sublimation

Answer:

the phase change from a solid to a gas; dry ice does this

Question 23: reactivity

Answer:

the ability of a substance to react with another substance to form something new

Question 24: melting point

Answer:

the temperature at which a substance changes state from a solid to a liquid; ex. water melts 0 degrees C and this is a PHYSICAL PROPERTY

Question 25: metals

Answer:

a group of shiny, strong, & solid elements that are good conductors of electricity and heat and are usually malleable & ductile

Question 26: evaporation

Answer:

phase change from a liquid to a gas; occurs on the surface of a liquid

Question 27: conductivity

Answer:

the ability of a substance to allow heat or electricity to travel through it easily such as copper; this is a

PHYSICAL PROPERTY

Question 28: density

Answer:

the amount of matter in a given space. d=mass divided by volume