Which metal is used for sacrificial protection on steel ships?
Oops!
Show
Check
Okay!
Check
15
Which gas is always produced when a metal reacts with water?
Oops!
Show
Check
Okay!
Check
15
What happens when zinc is attached to a steel ship?
Oops!
Show
Check
Okay!
Check
15
1- Which statement best describes an exothermic reaction?
Oops!
Show
Check
Okay!
Check
monster
Reset all scores!
Oops!
seesaw
Swap points!
Okay!
shark
Other team loses 25 points!
Okay!
thief
Give points!
5
10
15
20
25
10
True or False Inert substances take part in chemical reactions.
False
Oops!
Check
Okay!
Check
15
A) Why is an endothermic reaction useful in a cold pack? Explain how it helps when someone has an injury.
- When ammonium nitrate dissolves, it absorbs heat energy from its surroundings, making the cold pack cool. - This cooling helps reduce pain and swelling by ta
Oops!
Check
Okay!
Check
heart
Other team wins 10 points!
Oops!
magnet
Take 10 points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
15
True & false The flare includes strontium nitrate, which makes a red flame.
True
Oops!
Check
Okay!
Check
15
True & false The Rio Tinto River is red because iron compounds are dissolved in it.
True
Oops!
Check
Okay!
Check
15
Which of the following represents sodium peroxide formula
Oops!
Show
Check
Okay!
Check
15
In the reactivity series, metals become ______ as you go down the list.
Oops!
Show
Check
Okay!
Check
monster
Reset all scores!
Oops!
gold
Win 50 points!
Okay!
shark
Other team loses 20 points!
Okay!
lifesaver
Give 25 points!
Oops!
baam
Lose 15 points!
Oops!
magnet
Take 25 points!
Okay!
fairy
Take points!
5
10
15
20
25
banana
Go to last place!
Oops!
15
3) A grade 7 student wants to know if the reaction of hydrochloric acid and sodium hydroxide solution is exothermic or endothermic. He did an experiment for this reaction. Give the name of this reaction:
Neutralization
Oops!
Check
Okay!
Check
15
Which metal is described as inert in the document?
