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Q 1/40
Score 0
Why do scientists use models in science?
30
To help students remember names of parts of the atom.
To explain things that are too small or hard to observe.
To show real objects exactly as they appear in real life.
To decorate science books with fun pictures.
Q 2/40
Score 0
Which of the following is an example of a scientific model?
30
A colorful poster about famous scientists.
A science quiz with questions about the solar system.
A diagram showing the parts of an atom.
A list of atom names written on the board.
40 questions
Q.
Why do scientists use models in science?
1
30 sec
Q.
Which of the following is an example of a scientific model?
2
30 sec
Q.
Why can we say orange juice is not a pure substance?
3
30 sec
Q.
How does the particle model explain why bubbles rise in orange juice?
4
30 sec
Q.
What does the faster movement of particles in the hot soup tell us about temperature?
5
30 sec
Q.
What change happens to the spacing of particles when soup is heated?
6
30 sec
Q.
Based on the particle diagrams, which one best represents a gas?
7
30 sec
Q.
If Diagram B shows particles that can move freely but stay close, what state of matter is it and why?
8
30 sec
Q.
What property of solids can be explained by their particle diagram?
9
30 sec
Q.
Why did the water in the ice tray turn into ice after being placed in the freezer?
10
30 sec
Q.
After leaving the juice outside, Liza noticed the water disappeared. What process happened, and why?
11
30 sec
Q.
Why did droplets form on the underside of the lid during Lizaās experiment?
12
30 sec
Q.
Liza claimed that water needs heat to become vapor. Her friend Anna said that water can change into vapor even without heat. Who is more correct, and why?
13
30 sec
Q.
How do the changes in energy during boiling and freezing support the idea that these are opposite processes?
14
30 sec
Q.
Which of the following tools did the students use to measure how fast water drained?
15
30 sec
Q.
What materials did the students compare in the experiment?
16
30 sec
Q.
What part of the investigation helps explain the outcome based on the data collected?
17
30 sec
Q.
Which of these shows an example of a result in their experiment?
18
30 sec
Q.
What would happen if the students did not follow the same steps for each soil type?
19
30 sec
Q.
What unit did the students use to measure the length of the rod?
20
30 sec
Q.
Why did the students write their data in a table?
21
30 sec
Q.
In Carlaās sports drink, what is the solute?
22
30 sec
Q.
What is the solvent in Carlaās solution?
23
30 sec
Q.
What is the concentration of the first salt solution prepared by Enzo and Mia?
24
30 sec
Q.
Which salt solution is more concentrated based on their results?
25
30 sec
Q.
How should Enzo and Mia calculate the concentration of a solution in g/mL?
26
30 sec
Q.
Why did the sugar dissolve faster in hot water during the experiment?
27
30 sec
Q.
What does the activity show about the role of heat in solubility?
28
30 sec
Q.
If you wanted to dissolve salt faster, which method would help based on the experiment?
29
30 sec
Q.
What conclusion can be made from the experiment with hot and cold water?
30
30 sec
Q.
Which solution is an example of an acid found at home?
31
30 sec
Q.
What happens when blue litmus paper is dipped into an acid?
32
30 sec
Q.
Which item is most likely a base when tested with litmus paper?
33
30 sec
Q.
What tool is commonly used to test if a solution is an acid or a base?
34
30 sec
Q.
What does it mean if litmus paper does not change color when tested with a solution?
35
30 sec
Q.
Why is it important to wear goggles when heating substances in the laboratory?
36
30 sec
Q.
Why should a test tube be held at an angle when being heated?
37
30 sec
Q.
Why did the teacher praise Jessa during the experiment?
38
30 sec
Q.
Why is it wrong for Paulo to look directly into the test tube while heating it?
39
30 sec
Q.
What is the correct way to measure liquid using a graduated cylinder?
