SCIENCE_Q1_WRITTEN WORK 3 (POST TEST)
Quiz by Jennifer P. Ognita
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- Q1
Read each question carefully and choose the correct answer.
Homogeneous mixture is one of its classifications. Which is the following is a homogeneous mixture?
mixed nuts
pebbles
seawater
oil and water
30s - Q2
Mixture is produced when two or more substances are combined. Which is an example of a mixture?
salt
coffee powder
vinegar
sugar
30s - Q3
Homogeneous mixture has uniform composition throughout. Which of the following mixtures which components are easily identified?
hot tea
hot coffee
taho
juice drink
30s - Q4
Homogeneous mixture has uniform composition throughout. What is the best description of a heterogeneous mixture?
We could not easily see the particles.
It could break down easily.
It could transfer the particles to another plac
We could easily see the particle
30s - Q5
Mixtures are physical combinations of pure substances that have definite or constant composition. Which of the following mixtures appears to have only one phase?
30s - Q6
Your science teacher showed in class a bowl of fruit and vegetables salad. Your classmate examined the mixture and was able to distinguish fruits from vegetables. What type of mixture was presented by your teacher?
homogeneous (Uniform)
colloid
heterogeneous (Non-Uniform)
solution
30s - Q7
Student A tried to mix a tablespoonful of sugar in a glass of hot water. While Student B mixed the sugar with a glass of tap water. They tried to do this at the same time. What do you think will they observe on the two mixtures?
The sugar was not dissolved completely in the two set-ups they made
The sugar floated at the top of each solvent.
The sugar dissolved faster in tap water.
The sugar dissolved faster in the glass of hot water.
30s - Q8
Your mother prepared two glasses of juice powder and water, but she was not able to mix well the mixture in the other glass. Which of the following factors affecting the rate of dissolution made the other one sweeter compared to the other glass?
size of particles
amount of solvent
stirring
temperature
30s - Q9
Colloid is another form of mixture. However, they are heterogeneous mixtures. Which of the following phrases best describes colloids?
It is a suspensions that look like solutions.
It is a heterogeneous mixtures that seem to be homogeneous.
It is a homogeneous mixtures that seem to be heterogeneous.
It is a solutions that look like colloid.
30s - Q10
Colloids are heterogeneous miture that seem homogeneous because the solute particles in them can evenly distributed by stirring and shaking. which of the following groups of mixtures are examples of colloids?
salt solution, powdered juice and water, sugar solution
gelatin,mayonnaise, milk
coffe powder.sugar,hot water
gravel and water, muddy water, sandy water
30s
