.
What is the meaning of this symbol (H2O)?
It is identified as water.
What state is chalk?
Chalk is solid.
What is matter?
Anything that has mass or volume.
Which side on the Periodic table is Metal located on?
It is located on the right side of the Periodic table.
Which element is filled in party balloons?
Helium
Provide 2 safety rules while using the Bunsen burner.
You need goggles and hair must be tied back.
Are any 2 atoms of the same element identical? Explain how you know
No. Two atoms of the same chemical element are typically not identical.
What is the difference between oxygen and carbon dioxide?
Humans breathe in Oxygen and carbon dioxide is exhaled.
Which element is present in milk?
Calcium
Which of these letters are not on the periodic table?
1. O. 2. D. 3. P. 4. K
2. D
What is a physical change? Please explain.
It is when molecules stay the same.
Name 2 differences and 2 similarities between metals and metalloids on the periodic table.
Differences- 1. Metalloids are conductors of electricity.
2. Metals are conductors of heat.
Similarities 1.Both are shinny
2. Both are to the left to middle side of the periodic table
What is a chemical change? Give 3 examples.
-Burning paper
-Lighting a candle
-Photosynthesis
Which of the following is not a part of an atom?
1. Preton. 2. Electron. 3. Proton 4. Neutron
1. Preton
True or False? A Proton carries a negative charge.
False
Name 3 physical properties and explain what it is.
Color, Density and Mass
A substance that can be observed or measured without changing the identity of the substance.
Name 3 differences between homogeneous and heterogeneous mixture.
Visibility and separation, give an example of each.
What two elements make up table Salt?
NaCl- Sodium and Chlorine
How many element are on the periodic table?
1. 80. 2. 99. 3. 118. 4. 122
3. 118
What is the process called when a liquid turns into a gas?
Condensation
Name a Chemistry fact that you learnt.
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Which element was the first to form?
Hydrogen