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100
Which elements have similar properties to CI?
What is Flourine
100
Which of these pairs have different properties?
What is Chromium and Iron
100
When magnesium(silver, smooth solid) and oxygen (colorless gas) mix, it creates a new product called magnesium oxide
What is the above is an example of chemical change
100
Na+CI=NaCI - which statement best describes the formation of sodium chloride?
What is sodium and chloride combined to form a compound
100
On the Ph level scale, where 0 is the most acidic, 7 is neutral, and 14 is the most basic, litmus pape is used to test substances for their Ph levels. If blue litmus paper is placed into a container where the substance of the container is acidic, the blue litmus paper will turn red. Base Ph will turn red litmus paper blue. Where might soft drinks like Pepsi or Coca Cola rank on the Ph level scale?
What is 4
200
Which element found in group 1 of the Periodic table reacts violently in water?
What is Sodium
200
Silver is the simplest form of matter.
What is Yes
200
What could the students do to make sure the data they collected is correct (accurate)?
What is repeat the experiment several more times
200
Acidic solutions in the Ph level scale means hydrogen (H+) ions have been produced in water. Base solutions on the Ph level scale means positive ions have combined with hydroxide (H-) ions and the hydroxide and the hydroxide ion is a negative ion. What would most likely be the Ph if you mix a base solution with an acidic solution?
What is the solution will have more H+ ions
300
Hydrochloric acid (HCI) is added to a beaker containing a solid piece of zinc (Zn). As a result, zinc chloride is formed and hydrogen gas is released. This process is best described as a
What is chemical change because a gas is released
300
When vinegar and baking soda are combined what would the outcome most likely be?
What is A formation of bubbles will occur
300
Which element in Lithium sulfide and sodium chloride have similar properties?
What is Sodium and Lithium
300
How do chemical and physical changes differ?
What is chemical changes often produce new substances with new properties made; in physical changes, substances remain the same but in a different form.
300
When two elements combine, their mass is usually greater than substances that are not combined.
What is true
400
In a closed system of observation, matter is not allowed to enter or leave; instead it is contained in one area and does not lose its mass. In a closed system hydrogen and oxygen are combine chemically. What is the mass of the product?
What is equal to the mass of oxygen plus hydrogen
400
When two elements are combine chemically, what would be the resulting outcome?
What is The products will maintain their original properties
400
Which equation represents that the total mass stays the same during a chemical reaction
What is AI2+O = AI2O
400
Iron will rust quicker when exposed to
What is oxygen
400
If three different substances (example water, salt water, and vegetable oil) were combined, what will most likely be the outcome?
What is the liquids would layer with the most dense substances rising to the top.
500
(Use the periodic table to answer this question) Beryllium and Magnesium have properties that are similar to
What is Calcium and Barium
500
How can you know a chemical change has occured?
What is when one or more new substances form
500
Each family in the periodic table has its own characteristic properties based on
What is valence electrons
500
The best way to determine the outcome of an investigation is to
What is limit the variables in order to understand what caused an event.
500
A hypothesis that would state the possible outcome and reason why certain events took place would be used to
What is describe if a magnet could be used to pick up cereal.