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Q 1/40
Score 0
Which characteristic distinguishes a molecule from an atom?
30
Molecules are bonded together
Molecules are the smallest unit of a pure substance
Molecules are positive
Molecules are composed of subatomic particles
Q 2/40
Score 0
The students mixed vinegar and baking soda and bubbles formed and producing a gas. If they measured the mass of the substance at the beginning and had 20g, what would be the mass after the chemical reaction?
30
Less than they had initially because the gas left the flask similar to evaporation
More than they had initially because the gas would stay in the flask
40 questions
Q.
Which characteristic distinguishes a molecule from an atom?
1
30 sec
Q.
The students mixed vinegar and baking soda and bubbles formed and producing a gas. If they measured the mass of the substance at the beginning and had 20g, what would be the mass after the chemical reaction?
2
30 sec
Q.
Which of the following best describes a chemical change?
3
30 sec
Q.
Sarah has two glasses, filled with water and adds 1 ice cube to each glass. In the first glass, the ice cube sunk and in the second glass, floated. What best describes the conclusion?
4
30 sec
Q.
You mix two solutions together and your left with a solid white substance after all the liquid is gone. What best describes the original substance?
5
30 sec
Q.
What are the properties of Ca, BA and Li?
6
30 sec
Q.
Sugar and Sand is what type of Mixture:
7
30 sec
Q.
Sugar and water is what type of mixture:
8
30 sec
Q.
Rusting is similar to which type of reaction?
9
30 sec
Q.
As you go from the bottom to the top of the states of matter diagram, what happens to the motion of particles?
10
30 sec
Q.
Which state of matter has particles that are tightly packed and moves the slowest?
11
30 sec
Q.
Which state of matter shows particles that slide past one another?
12
30 sec
Q.
Which is a chemical property of matter?
13
30 sec
Q.
Increasing the temperature causes:
14
30 sec
Q.
Which is a not physical property of matter?
15
30 sec
Q.
Oil and water mixture:
16
30 sec
Q.
Salt and water mixture:
17
30 sec
Q.
You have 3 different substances. Substance A has a density of 20g/cm3, Substance B has a density of 15g/cm3 and substance C has a density of 10g/cm3. If you placed all 3 into a graduated cylinder, what would be the result from top to bottom?
18
60 sec
Q.
Gas production is a sign of a:
19
30 sec
Q.
A neutral atom:
20
30 sec
Q.
Magnesium has:
21
30 sec
Q.
Lithium has:
22
30 sec
Q.
What tells us the number of protons in an atom?
23
30 sec
Q.
Which is considered a non-metal?
24
30 sec
Q.
Which is considered a metalloid?
25
30 sec
Q.
A mixture can be __________ separated
26
30 sec
Q.
A pure substance _______ be separated physically
27
30 sec
Q.
You place ice cubes in a closed zip lock bag and measure its mass. After the ice melts, you measure the mass again. What should be the conclusion?
28
60 sec
Q.
You place ice cubes in a cup with no lid and measure its mass. After the ice melts and you measured again, the mass was less than you started with. What should be the conclusion?
29
60 sec
Q.
If you have 100g of sugar and you add 90g of water, what is your final mass?
30
30 sec
Q.
Which has similar properties?
31
30 sec
Q.
Solid, shiny, reacts with Flourine, cannot be broken down physically or chemically. Must be a:
32
30 sec
Q.
Which is not a type of heat transfer?
33
30 sec
Q.
Which type of heat transfer occurs in the ocean?
34
30 sec
Q.
A + B = AB
35
30 sec
Q.
Which is an element?
36
30 sec
Q.
States that your products will always equal your reactants:
37
30 sec
Q.
Substances with different densities will:
38
30 sec
Q.
When you feel a cold cup, you are experiencing which type of heat transfer?
39
30 sec
Q.
The mixing of warm and cold air is an example of what type of heat transfer?
