Which element has an atomic number of 47?
Silver
Proton = positive
Neutron = neutral
Electron = negative
Give one example of a physical change.
Ex: Cutting paper, chopping wood, ice melting, etc.
Do electrons move in perfect circular orbits around the nucleus?
No
What is the shape of a goat's pupil?
Rectangular
Which element has 12 protons?
Manganese
What two particles are found in the nucleus of an atom?
Give one example of a chemical change.
Ex: Something burning, cooking an egg, milk going sour, baking a cake, etc.
What is the space around the nucleus where electrons are found called?
Electron cloud
What is the first number (when written in words) to contain the letter 'a'?
One thousand
Name the element:
26 protons
26 electrons
30 neutrons
Iron (Fe)
Which particle is found orbiting the nucleus?
Electron
Cereal and milk is an example of a ___________ mixture.
Heterogenous
Which part of the atom interacts with another to create bonds?
Electrons
What are the only birds that can fly backwards?
Hummingbirds
Which element has 24 neutrons?
Scandium
Which particle has a mass of 0 AMU?
Electrons - protons and neutrons have a mass of 1 AMU
Which of the following is an example of a homogenous mixture?
A. Pizza with toppings
B. Soda with ice
C. Blood
D. Mulch
C. Blood
Why do most atoms have a neutral charge?
They have the same number of protons and electrons.
Which former president is a part of the National Wrestling Hall of Fame?
Abraham Lincoln
Which of the following elements is the least reactive (i.e. they are less likely to form compounds)?
A. Magnesium
B. Helium
C. Carbon
D. Nitrogen
B. Helium
Approximately 12 AMU
What is a possible outcome of a piece of wood going through a physical change?
Ex: Cutting the wood into smaller pieces, crushing the wood into mulch, etc.
How many atoms does the following compound have: NaCl?
2
What is the official national animal of Scotland?