Chemistry Quiz for Grade 2
- Question of
When a liquid changes into a solid, what is it called?
- freeze
- melt
- heat energy
- condense
- Question of
What is it called when matter changes from one state of matter to another?
- physical change
- heat energy
- water cycle
- matter
- Question of
What are the three major states of matter?
- solid, liquid, and gas
- solid, liquid, and wood
- solid, iron, and gas
- metal, wood, and paper
- Question of
What is it called when a solid changes into a liquid?
- melt
- freeze
- heat energy
- water cycle
- Question of
What is anything that takes up space and has mass?
- matter
- melting
- volume
- mass
- Question of
A __________ has a definite shape.
- solid
- liquid
- water
- mass
- Question of
Which of these are examples of a gas?
- helium
- carbon
- mercury
- aluminum
- Question of
Which ONE of these are NOT a liquid?
- ball
- shampoo
- milk
- water
- Question of
Hard, definite shape, color, and size, are a few ________ of a solid.
- properties
- matter
- solid
- liquid
- Question of
Two science students sift dirt. Afterwards, they have two piles of dirt. The dirt in one pile is mostly small rocks and pebbles. The dirt in the other pile is mostly sand grains. The dirt was sorted into piles by which property?
- texture
- flexibility
- hardness
- luster
- Question of
What is an example of a solid turning into another state of matter?
- snow becoming a puddle
- tearing a piece of paper
- breaking a chair into pieces
- water freezing
- Question of
Atoms are neutral because they have _______________ ?
- The same number of protons and electrons
- The same number of protons and neutrons
- The same number of electrons and neutrons
- Different numbers of protons and neutrons
- Question of
Ions are created by gaining or losing _________________?
- Electrons
- Protons
- Neutrons
- None of them
- Question of
One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
- 250 g
- 500 g
- 1 g
- 2 g
- Question of
If you fill a glass to the brim with ice water and the ice melts, what will happen?
- The water level will drop slightly as the ice melts.
- The level of water in the glass will remain unchanged as the ice melts.
- The glass will over flow as the ice turns to water.
- I’ll never find out because I’ll drink the water or walk away before anything happens.
- Question of
The symbol Sb stands for stibnum or stibnite. What is the modern name of this element?
- Antimony
- Tin
- Samarium
- Arsenic
- Question of
Water-based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk?
- Slightly acidic
- Neutral
- Slightly basic
- Strong acid
- Question of
Noble gases are inert because they have completed outer electron shells. Which of these elements isn’t a noble gas?
- Chlorine
- Argon
- Krypton
- Helium
- Question of
What is the most common isotope of hydrogen?
- Protium
- Deuterium
- Tritum
- Hydrogen only has one isotope!
- Question of
You can’t live without water! What is its chemical formula?
- H2O
- H2O2
- O2
- H2
- Question of
Who is credited with the invention of the modern periodic table?
- Mendeleev
- Mendel
- Lavoisier
- Nobel
- Question of
Which of these elements is a nonmetal?
- Sulfur
- Manganese
- Beryllium
- Aluminum
- Question of
Organic chemistry is the study of the compounds that make up living organisms. All organic molecules contain:
- Carbon and hydrogen
- Carbon and nitrogen
- Carbon, hydrogen, and oxygen
- Carbon only
- Question of
Three of the most common states of matter are solids, liquids, and gases. A liquid has:
- A defined volume, but not a defined shape
- A definite shape, but no defined volume
- No defined volume or shape
- A defined volume and shape
- Question of
The symbol Ag stands for which element?
- Silver
- Magnesium
- Gallium
- Gold
- Question of
You can’t live without iron. Where in the body is most of the iron located?
- Your skin
- Your blood
- Your brain
- Your bones
- Question of
A mole contains Avogadro’s number of items. What is Avogadro’s number?
- 6.023 x 10^23
- 6.02 x 10^-23
- 3 x 10^8
- 6023
- Question of
What do you call an atom that has more protons than electrons?
- A cation
- An isotope
- An anion
- A molecule
- Question of
A drop of food coloring spreading out in a cup of water is an example of which transport process?
- Diffusion
- Osmosis
- Vapor Pressure
- Effusion
- Question of
In a solution of saltwater (a saline solution), salt is the:
- Solute
- Solvent
- Colloid
- Sol