Elements
Which element has an atomic number of 20?
Calcium
Name the element that is in period 2, group 13?
Aluminum
If you placed an object into a beaker with 50 mL of water and the water level rises to 62 mL, what are you measuring?
Volume
What has a density of 1 g/cm?
Water
What is an example of a physical change?
Tearing a piece of paper
Which element has an atomic weight of 39.10?
Potassium
Name the element that is in period 2, group 15?
Nitrogen
If you put an object on a balance scale, what are you measuring?
Mass
Water has a density of 1. Will a ball with a density of 1.88 g/cm float in water?
No
What is an example of a chemical change?
Dissolving sugar in water
Which element has 12 protons and electrons?
Magnesium
Name the atomic symbol that is in period 7, group 8?
Hs
If you placed a rock into a beaker with 50 mL of water and the water level rises to 62 mL, what's the volume?
12 cm3
An object will sink placed into liquid if it is less dense, more dense or the same as the liquid.
More dense
Chemical Change
Which elements have to least amount of neutrons?
Sodium and Magnesium
Where is Silver located on the periodic table?
Period 5, Group 11
If the volume of a metal is 10 cubic centimeter and the mass is 80 grams, what is the density?
8 g/cm
Honey is less dense than:
Bolt
Which colors indicate an acid?
Dark Red, Red, Pink
Which elements have the greatest amount of neutrons?
Potassium and Calcium
Where is the element At located on the periodic table?
Period 6, Group 17
Density: 6 g/ml
Volume 42 ml
Mass: 252 g
What is less dense than a ping pong ball?
Nothing
A student added an unknown substance to red cabbage juice and the color changed to blue. It is a base or an acid?
Base