PHY 101- Introduction to physics

A nucleus with an atomic number of 10 and a mass number of 22 must have

10 protons, 12 neutrons, 22 nucleons

a common iron atom has 26 electrons, how many electrons does an isotope of iron have?

26. An ion has a different number of protons and electrons, and isotope has the same protons and electrons but different neutrons

A nucleus with an atomic number of 30 and a mass number of 65 must have

35 neutrons

If a 1-kg sample of antimatter meets 10kg of matter, how much survives.

9 kg, the anti-matter destroys 1 of the matter.

An element with atomic number 26

Has 26 protons, normally 26 electrons, is iron

the most abundant element in the universe is

Hydrogen

Brownian motion has to do with

Random motions of atoms and molecules

mass number of an element refers to the number of

The amount of mass- so protons and neutrons, nucleons

The sky is white

due to thick particles

To see your full height image in a wall mirror, the minimum height of the mirror should be

half your height

we know atoms are mostly

made of empty space

electrically neutral

neutrons

Atoms heavier than hydrogen were made by

nuclear fusion

What is known about atoms is that they are

perpetually moving, tinier than the wavelengths of visible light and recycling among innumerable forms.

A nucleon is

protons and neutrons

Color of light that passes through the thick atmosphere is.

red

blueness in the sky is due to

scattering

Light takes the path from one point to another that is

the quickest

the electronic charge of a proton is

the same as an electron

elements that are heavier than hydrogen are

the stars

Your reflected image in a plane mirror is as far behind the mirror as

your distance/ how far you are from the mirror